What is your favorite open source software?

Gonna go with Firefox as both my most-used piece of open-source software, and the software I see as most important to its ecosystem. If Firefox fails then we've just got Chromium-based browsers and, I guess, Safari.

I love and use Bitwarden daily.

Firefox and its derivatives. They're the last free bastion preventing a Chromium monopoly on the browser market, which is hugely important - especially these days with Google's push for Mv3.

Signal, Thunderbird and Bitwarden

Signal, Firefox and Eclipse.
Too bad Signal are dropping support for Windows 7 ;(
- Kind of odd to use Signal (a privacy and security focused messenger) on Windows 7 (an EOL and thus highly unsecure operating system).
I didn't know thunderbird was open source!
- Yup, it's the nephew, so to speak, of Firefox!
that's cool that others also love open source. these three right here are 🔥

Firefox. It is the only thing keeping Google from total internet domination

Isn’t most of the Firefox revenue coming from Google ?
- What does that have to do with Google’s ability to force their view of the world through the dominance of the browser share market?
- Yes, they need Firefox to avoid monopoly.
Scary to think about. Pretty much down to 3. Chrome, Firefox and safari.
- It is the same fight that we all fought against Microsoft IE but Google has been a lot smarter with their shit fuckery
im worried about Mozillas ability to keep growing Firefox. They laid off a lot of their firefox team a few years ago and have been dipping into more commercial interests.. we really need Mozilla to be the FOSS counter to big tech.

Ill throw in some obscure ones I use daily.

StemRoller. It's an AI-powered toolthat takes an mp3 and separates each instrument into its own file. Im a musician, and having access to stems like this is a game changer.
Carla is a tool for hosting VST plugins without the need for a full DAW. I primarily use Amp Simulators, and this has become a mandatory tool on any computer I use. It's also maintained by the creator of KXStudio.

uBlock Origin, it's not even close!

the web would be miserable without it.
My vote was for Godot but this one is a very close second. I even have it installed on my mobile Firefox instance.

Blender by a huge mile. Yes, there’s tons of other software like Linux, of course, but Blender is such a powerful, well managed, economically viable and healthy (community) project that it should be shown as an example of how Open Source should be.

My biggest hurdle with other projects is the fanboys, because many times they’re quite toxic, insulting everybody who doesn’t adore the project and don’t accept constructive criticism.

By a huuuge mile indeed. Blender devs are great at listening and communicating with the community.
The standardization of hotkeys and features across the software is fantastic. The UI is snappy and filled to the brim with intuitive QoL features I wish were standard for my OS.
I have irreconcilable grievances with a lot of open source software, VLC, VSCode, etc, and find development slow and heading non optimal for others like Sharex and Firefox... but Blender, that's green on all fronts.
Blender is the model open source project :P
Krita for me!
Honestly, Blender was the first software that really "proved" open source software to me, and I've been an open source exclusive user to this day

GNU+Linux

Firefox and Bitwarden

LibreOffice is equal to any office software out there, and has been much more stable than OpenOffice, and works without an internet connection unlike Google Docs.

Linux.

Proxmox, opnsense, fdroid, and many more on r/selfhosted (now on lemmy also) .

sunshine, moonlight ( play my games anywhere in the world, games run on my pc at home)

Firefox (the best browser against google monopoly), thunderbird (best mail client)

LineageOS, microG, Mozilla Location services, Magisk, aurora store (let me use Android without any of google tracking)

Bitwarden, Proton mail/vpn, Nextcloud (finally no gmail tracking)

Jellyfin, kodi (lets me create my own Netflix)

GNU/Linux, GNOME, KDE and host of other Linux projects. No more windows tracking. Also if you want to really know how the OS works, you should start tinkering with Linux. I expanded my knowledge base by just using Linux as daily driver.

The list just goes on and on. I am so grateful for all the open source devs that put their time in developing these tools.

For those wanting to go further, checkout https://github.com/awesome-selfhosted/awesome-selfhosted

Firefox lets you use extensions on mobile too
- For degoogling i remove stock os that comes with my Android device. I buy phones which have good support for custom roms (like nothing, oneplus, pixel). You can find the custom roms on xda threads and telegram groups for your device.
  After installing the custom rom i root it with magisk and flash minmicrog package which installs microG (oss version of play services) and with it comes mozilla Location services.

uBlock Origin - the chaddest AdBlock of them all!

I'd go with either Firefox or Thunderbird. Both are immensely useful pieces of software that I use on a daily basis, and have evolved (mostly) nicely over time.

Not to give Mozilla too much credit, Nextcloud is also pretty slick!

It's Lemmy you fools. It's always been Lemmy.

If i had to go with just one the linux

Or as I've recently taken to calling it gnu+linux

Not one per se, but I love when a piece of open source software absolutely destroys it's competition. I'm not talking Firefox vs. Chrome or Unity vs. Godot debate (both are better, don't @ me), I'm talking when it's not even close, the open alternative is just industry standard.

VLC, Calibre, OBS and maybe Blender come to mind.

So many to choose from...Linux, Syncthing, Vim, Firefox and Thunderbird/K-9 Mail, Keepass and derivatives, GrapheneOS, Inkscape, VLC/mpv, yt-dlp...there are just too many daily drivers to name them all.

Vim wouldn't even have occurred to me if you hadn't said it. I use Vim more than I talk to my family.
- Exactly, text editors are such everyday staples and yet it's easy to take for granted that they are open source. Vim is often the first package I install on new systems when not already present and, outside of my web browser, is certainly the program I use most.
  On that note, I'll add Markor to my favourites list. It's absolutely the best Android markdown editor/viewer I've found to date, and it works beautifully with Syncthing folders.

Git itself.

Which allowed this monstosity I contributed heavily to, to leave a hellscape of svn patches: https://github.com/LandSandBoat/server

So git earns the "favorite" designation hands down.

There’s nothing more open source than Git. It’s open source software created to support the development of open source software. I’d bet that the vast majority of projects named in this thread are developed using Git.
Also, that’s a really cool project!
- The only thing that even has a chance at being a contender against is gcc
- git is the best, but sometimes I wonder if its total domination in the SCM market is really a good thing.

Not by importance. Obviously that would be the Linux kernel, GCC and GNU coreutils, and the Firefox web browser, among some other foundational things (code to run my desktop GUI, for example).

So, I'll say my favorite is PCSX2. Ever since they got rid of the ancient plugin architecture this emulator has been getting sooooooo much better, and it was already great! I would add other top tier emulators like Dolphin, DuckStation, SNES9X, SameBoy, and so on. I just love emulators :)

Blender, don't even use it that much but I love it

Came to find Blender. It's amazing what that project achieves.
I'm always blown away at the power I see available in Blender, it's a real anomaly.

Newpipe, tor, keepass xc , syncthing and KDE connect

Right now it's Proton. The work that has been done to makengaming possible on Linux is astounding!

Just got a steam deck and have been learning how incredible proton is
- The progress it has made is incredible too! I want future games.to target native Linux releases, but there are so many that probably lack the expertise to do so, and Proton is a great way to get them to work.

I use a lot of Open Source software at home but Home Assistant is by far the most used, although mostly it's doing its automations in the background without me having to think about it.

Home Assistant is not only extremely useful, extremely good, but I've loved contributing to it: it's so cool being able to develop a new integration and control your actual devices with it!

Firefox I think is actually the best browser totally independent of technological ethics issues. Started using it because I was on 2GB RAM at the time and Chrome was much more RAM-intensive (apparently this is reversed now,) and I've never looked back.

SQLite. Probably the most widely used open-source library in the world. Pretty much every computer, phone, tablet, and a lot of embedded systems, all use it.

Home Assistant, a powerful home automation platform.

vim, neovim and a bunch of plugins. It's such a great productivity booster, I am using it daily for SW development.

I'm convinced anyone who doesn't say emacs is simply just more productive than me

I think I'll go with GIMP: it's such a well made tool and for 99% of use cases is a valid alternative to professional photo editing suites

for 99% of use cases
Brave thing to say online about Gimp 😄
- Yeah I know, being realist always backfires
- Exactly ... I'd say more 80 percent of everything you ever want to do with an image ... the other 20 percent is probably stuff that isn't worth doing anyway ... I use GIMP all the time and it's the image editor I use the most often

7-zip, Firefox, VLC player

7zip is such an easy pick, its almost the default option lol

My favorites based on usage:

7Zip. It's clean and has a lot of convenient features.
Bitwarden. I have too many accounts these days. It's a life saver and it's on all my devices!
Rufus Formatting tool. This rules. It's great for just formatting or creating a bootable USB. Not to mention it's portable so I can bring it with me to work.

I'm surprised you didn't mention zstd, I've been using that in a bunch of projects for a while now

GNU & Linux (Debian)
TeX & LaTeX (TeX Live)
Firefox

Edit (forgot):

qBitTorrent
Signal

Blender. Probably one of the best pieces of software I've used ever.

BitWarden and Homebridge.

Aegis, then ente and now 2FAS. Well 2FAS is slowly supporting unencrypted backups from other open source 2FA apps. I hope 2FAS will support backups from plain text.
- Sadly I’m deeply entrenched in Authy. I already started moving to iOSs excellent 2FA integration when passkeys came out. That’s the future. It’s just so effortless.

We definitely need Blender in the mix as well!

Also Signal, Bitwarden and Firefox.

Most used for me is Firefox (in fact I'm so used to it, it didn't even come to mind until I saw so many replies mentioning it!).

The favorite is probably git.

For the recently discovered stuff that would probably be the Astro frontend framework (and Svelte).

Also what a wonderful thread to discover stuff. Thank you all! ::: spoiler spoiler Also my first ever comment on Lemmy. 😎 :::

Linux (generally speaking)
KDE as a whole
Tusky
Brave as a browser
Bitwarden/vaultwarden

qBittorrent came to my rescue after uTorrent went commercial.

FFmpeg

Are we only counting FOSS or would Doom count? If Doom counts, my pick is Doom. Having access to Doom's source code is where I learned a huge majority of my programming knowledge making mods for it.

There's is chocolate doom which I believe is foss

I like a bunch of OSS projects but Firefox is way up there above the rest.

Gnome 44, (probably gonna get roasted by Gentoo users) Nano, Librewolf, Free tube, NixOS, Gnu utils, Krita, kdenlive, Gimp Nuclear, Shredder, Gnome disks, Qemu/KVM

Edit- and test disk, it saved my ass this week. I accidentally wrote a new partion table over my hdd that had all my family photos. Used testdisk let it run on my laptop for 22hours recovered all photos and files. Shout out to the Devs for make great FOSS software

OMG another Gnome Enjoyer. This is so new to me... wanna hang out?

NVDA. Without it I literally couldn't use my computer every day, or do my job.

Haven't seen Inkscape here yet. I use it for almost every image editing thing I regularly do like cropping, stitching together, adding text and of course creating graphics from scratch.

in terms of time I spend in it:

linux
firefox
vi

Vlc media playerVlc media playerVlc media playerVlc media playerVlc media playerVlc media playerVlc media playerVlc media playerVlc media playerVlc media playerVlc media playerVlc media playerVlc media player

Linux and GNU too :p

I didn’t realize vscode is open source. Good to know!

No love for VLC player?!?

firefox and lemmy I guess

Firefox, probably. Though Heroic Games Launcher is getting there real fast. And currently I very often use Baby Journal, though it's an app I wrote, so I'm not sure I can really call it "favorite", but it's definitely one of my most used FOSS apps currently.

Baby Journal could use an more detailed About page. It looks like it's a shared space for families to post/talk about their kids in digital saftey. What an awesome idea! Well done!

Freecad is pretty powerful, and fully functional now that they figured out their topological naming problem.

Libre Office

Have you tried Only Office? Recently discovered the application and kinda like it more than LibreOffice
- Only Office?
  I see the Ribbon menu bar, I leave. Don't get how people can work with that abomination.

mpv.io !
I discovered it before covid, and it is really lightweight and customizable. So many plug-ins, and they're so simple to create.
I was usually having issues with VLC or settings that he didn't have. No issues with mpv, so far.

Weird issue with VLC / Manjaro lately as it just wouldnt play any file. Opens and just closes. Just tried out mpv.io. Worked like a charm. Thanks!
- If you are new to mpv, I recommend this guide https://thewiki.moe/tutorials/mpv/ because the settings are not user-friendly as it has no GUI.
love mpv! such a minimal video player, and it's really easy to pipe video sources into it via cli with something like streamlink.
only complaint i have about it is i couldn't get chromecast working with it, but it was pretty easy with vlc.

Is Android a valid answer? Maybe not Google's monstrosity but AOSP (although I feel as though it's hard to extricate one from the other save for projects like GrapheneOS).

I'm only going to mention desktop software, there's too many tools and layers involved in spinning up a server.

Daily use (most used first):

Firefox
MRemoteNG
Notepad++
VS Code
Git
WinSCP
7-zip (love the tool but hate the format, storage and bandwidth is cheap now, let's just use zip please)
VLC
Python

It's a pretty boring list: connectivity tools, text editors, and version control are placed front and centre. That said they are great tools and I would hate to live in a world where I was limited to only proprietary products

Stuff I wish I had more time to use:

Godot
Blender
Audacity
Krita

Special mention:

QGIS (and the whole OSGeo ecosystem)
qBittorrent
RetroArch (and all the FOSS emulators it promotes)
OpenTTD
GIMP/Inkscape (I don't need them often but I'm glad they are their!)

Vaultwarden

And Inkscape as well.
- And Krita!

Since major projects like Firefox keep getting mentioned, I’ll throw a shout out to Ant Renamer.

It’s simple, it’s FOSS, and it just works. I often - ahem - acquire a number of files from various sources that are labeled like “Mission.Impossible.7.Complete.zHD.2022.xReloadedx”, and an application like Ant Renamer can batch rename files into whatever you need.

For example, if I need to backup or copy a set of game saves in a folder that all need to have the same prefix like N007 from N002, I would have to manually change 10K files from one prefix to the other. Ant Renamer can do everything in a batch that runs quicker than the blink of an eye.

So, Ant Renamer for the win!

Honestly probably neko my friends and I used to love rabbit but it went to shit

Is this a more private way of browsing the internet than something like a hardened Firefox or Librewolf?
- Nah, I mean it can be and you can set it up like so. It's mainly just to watch stuff together
would you say it handles streaming better than discord screensharing? I wanna watch movies with other people, but discord compresses the stream into nothing

If I had to pick only one artifact's worth: bash, probably. Otherwise:

bash
vim
Linux (the kernel itself)
Kubernetes
Firefox
urxvt
Python
pacman
nix
util-linux
procps-ng
iproute2
iptables(-ng)/ebtables
GNU parallel
jq

Eeew bash? What are you, a Neanderthal? All the cool kids use Zsh. 😜
- But what about fish?
- Lol, that’s what I was gonna say ohmyzsh.
May I ask what makes you prefer bash over ZSH?
- Bash defines zsh; not the other way around.

Lemmy

gnu

Hyprland So much fun

Git
(Open)SSH.
OpenStreetMap and Trekarta (Offline OSM maps for Android)

Linux, Firefox, Bitwarden, Android

Blender, by far :)

Linux, Firefox, PeerTube

I use Librewolf for all of my personal browsing

Godot game engine without a doubt.

Yggdrasil, an IPv6 end to end encrypted networking proof of concept. There's something about it that I find so innovative that I want it to succeed so badly !

Would this be able to replace ISPs if it succeeds? Did I read that right?
- In short: No.
  Assuming that I understood correctly with a quick reading that's creating a whole another network on top of existing internet and requires raw bandwidth to function at all.
  Various mesh-networks have been around for quite a long time to solve the 'last mile' issue on poor areas. That requires pretty dense population to actually work, but at least couple of years ago there's been some moderately successful projects. I haven't followed those in years, so I don't know what's the current status and that's very different from what Yggdrasil is doing.
- Technically yes. You could simply connect to your neighbor's computer and join the network this way.
  In practice, you'd still need ISPs at some point to connect to farther nodes, have a correct bandwidth, etc ...
- That's what I use it for right now ;)

Os: Linux mint, Solus, endeavour Programs: librewolf, freetube

I don't have "one" favourite but these are up there

Linux, MPV, Proton, bash, Newpipe

I liked NewPipe for a while, but then eventually all the bugs that I got used to started to annoy me. Really interested to see where the partial rewrite goes!
bitwarden and bash are def up there

Going by what I use the most: Firefox, git, less, tailscale, midnight commander

archlinux firefox thunderbird emacs

"archlinux firefox thunderbird" sounds like an amazing name for something.
Vi is always the superior choice. This war will rage until the sun dies out.
- Not sure if should upvote you bc this flamewar needs to be picked up again or downvote you for your inferior choice of editor
  #ChurchOfEmacs

Blender

Not entirely software, but the MiSTer FPGA project. Having accurate zero-lag hardware accurate versions of almost every console, many arcade games, PCs (Amiga, Commodore etc), and handheld up to and including the PlayStation in a box the size of a game boy is unreal.

Majority of the project is open source, and has been used for ports to the analogue pocket handheld, which I also have and use often

I couldn't get by without AutoHotkey and AltSnap. Especially having extra buttons on my mouse, there's so many custom shortcuts, commands, controls, etc. that I couldn't make without them. AltSnap also has a built-in borderless windowed button that works better with games than some apps I have used that are explicitly for that purpose. I have shortcuts for changing volume, switching windows, toggling always-on-top, and even making windows transparent all from the mouse.

While I think AHK is great and I always use it if I'm daily driving a Windows install.. it's pretty sad that you have to use such a janky language + have this software always open listening to events just to do custom hotkeys on Windows.
On Gnome I can just write a shell script, go into Gnome settings and then add a hokey to it. I don't need to install anything, it works much more fluidly, and takes up less system resources.
- On Gnome I can just write a shell script, go into Gnome settings and then add a hokey to it. I don’t need to install anything, it works much more fluidly, and takes up less system resources.
  Holy shit. I've been sad we don't have ahk but this is such a simple solution. thank you.
I'm with you here, but as a Linux user I use AutoKey. Game changer

OsmAnd

I'unno. Don't really think about it that hard.

I guess firefox, since it gives me ~~porn~~ access to websites.

A few of mine that I use daily...

Networky Things:

A couple of personal projects:

Infinitime, for my PineTime.

Firefox, VLC, LibreOffice

Emacs, tor, mpv, KDE, f-droid, python, qemu

Since most of what I would have said has already be mentioned I will just go with almost anything under the umbrella of the KDE organization.

As in the Plasma desktop environment and the whole application suite. Includes programs like Krita, Kdenlive and KDE Connect, plus the whole range of "standard" desktop applications like terminal, file manager, document viewers, etc. pp.

And the DE itself is just adorably hackable. Want to replace the Kwin window manager with i3? Sure it's possible, here you go: https://userbase.kde.org/Tutorials/Using_Other_Window_Managers_with_Plasma

KDE Plasma desktop

Subsurface

Its dive planning and dive logging software. It's also the only software I'm aware of that can actually pull the data from my dive computer, which uses some crappy proprietary cable and software. The fact that subsurface exists and is automatically in Linux repositories is what finally allowed me wipe out my aging and barely functioning computer, and revive it with Linux.

Tachiyomi.

Pihole, Kubernetes, ffmpeg, VLC, pretty much we are so technologically advanced because there is so much free and open source software. If it wasn't for it we would be ages behind technologically.

Freecad. It's a little rough to use compared to professional cad products I've used but it can really do a lot. In a lot of ways it feels less constrained than some of the stuff I've used too

OBS is my one of my favorite softwares in general, let alone open source

Wine, despite the headache that is fiddling with its configurations for specific older games to work.

wine is incredible, recently i downloaded some weird niche software from the 2000s that hvac system designers use, and i figured hey why not, might as well try it on linux before rebooting into windows, so i ran it with wine, and it just... worked. it was great

Debian

Gotta go with python here, though vim would be a close second.

Android and Linux

Sonarr, Radarr, Lidarr, Readarr, and Prowlarr.

Readarr and Lidarr have been less than functional for me. I switched to Deemix for music and just use libgen for books now.
- I sorry to hear that, but I'm glad you found working alternatives!
🏴‍☠️🦜

The Linux Kernel and operating system in general. It is simultaneously my favorite and I hate that it killed my prior favorite, the SGI Irix operating system. I was there at the beginning, from kernel 1.1 through today. I remember telling regional directors at silicon graphics that Linux was the future and them disparaging that opinion.

Firefox, Libreoffice, and Bitwarden (I would include Zotero, but idk if it's open source)

i think Zotero is indeed open source, free software

Dolphin Emulator always amazes me in how perfect of an emulator it is.

In terms of overall usage, gotta go GIMP.

Firefox and Nethack

GNU Hurd. Never used it, but I like the idea and would love to see it become a viable option.

Foss open source, or open source after Stallmans deffinition?

If the first one I'll go for the GNU/Linux OS

Pandoc, KeepassXC, NeoVim

Ncdu is awesome. I even used it last night when I accidentally filled up my ssd causing my os to crash. Finding the offending folder took like 10 seconds. Much better than writing a whole script.

Bitwarden & Jellyfin

I got sick of corporations forcing restrictions so looked into alternatives. Learned how to do it myself & haven't looked back:

Joplin notes - use this every day synced to multiple devices Nextcloud - self hosted on a Raspberry Pi 4. Cloud storage plus syncs multiple stuff including Joplin

So many brilliant options on mobile: OsmAnd+ (nav), Antennapod (podcasts), Keepass (password manager), Obtainium (app updater). Was also enjoying Fritter/Quacker (Twitter without needing an account) until Elons recent meltdown. Also enjoying Liftoff lemmy app for Android

EDIT: hot off the press. For those interested, Quacker is back in the game. Not had chance to check Fritter yet

Favorite? Hm... I would have to say Codeigniter (PHP framework) but I love these projects as well: Linux/GNU, VLC, LibreOffice, qBittorrent, VSCodium, Filezilla, GIMP, Firefox, Wireguard, GrapheneOS, Matrix, F-Droid.

If I won the lottery I'd donate to these projects or their respective foundations.

Suckless software like dwm, st, dmenu

Godot!

I think alot of Indie and open source games owe their existence to SDL.

I also have a love-hate relationship with meson...

In terms of what I use daily

GNU Guix package manager
Kate text editor
Quassel chat client
KeePassXC and KeePassDX password managers
GNU IceCat browser (Firefox ESR derivative)
VLC media player

GNU/Linux Bitcoin core LND lightning LNDg

Linux

rust

Linux, Firefox, OBS, Emacs, Hatari

Linux

Arch Linux, LibreWolf & KeepassXC are the first that come to mind.

linux

Yes me too. Without Linux, basically nothing else runs in my house!

Ardour

Duplicati: A backup software that securely stores and restores data across various platforms and cloud services. Supports encryption and incremental backups (versioning). Lots of possibilities, but use it to back up my PC to my NAS and the other way around.
Ferdium: Messaging and other services combined in a single interface. Using it for Telegram, Whatsapp and services like Home Assistant etc. Allows apps to hibernate when not in use.
OpenRGB: Control and customize RGB lighting effects on various computer hardware components.
Firefox

Firefox, Bitwarden, and Tachiyomi are some that I use almost everyday

Favourite, not sure. Maybe my "favourite" would be the one which would be the hardest to replace with something I like.

There wouldn't be something i can think off that could be irreplaceable. However the hardest thing I like may be FanControl.

For the browser, Firefox is very nice, but it's "just" a browser if you think about it. There is brave, and other open source chromium alternatives if it disappears.

For mail clients, I also like the Mailspring design, however Thunderbird just got a new skin and damn it looks good too.

And for the rest, I don't really know. Either I don't remember right now, or no special "like" for the software. Or I like the closed source software convenience more (I may also have no idea of an open source alternative, or an equivalent in features open source).

It depends on the usage really.

paperless-ngx

Bitwarden, NetNewsWire, Firefox

Would probably say Firefox, but since many others have already mentioned it, I'll go with Nushell

Hard to answer but maybe Haiku or GNU Emacs

For games:

Anuto TD (found a few days ago, isn't super feature rich but still fun to kill time)
Mindustry (never played a game like it before, ended up supporting by buying it on Steam)
Supertuxkart (I love how many custom add-on karts and tracks I have)

For non-games:

Termux (allows me to get apk files and install Revancify for add free yt)
VLC (I don't mind slow updates and have yet to switch mostly because I can't find anything better that isn't more complicated than it needs to be and/or is closed source)
KDE Connect (I have almost always had problems with moving files from and to my desktop via cord)

I'd include something like Linux, but I personally feel that's kinda cheating because of how large it is compared to the others.

I would add these under games:)
Beyond All Reason (RTS)
Cuberite (OSS MC server implementation)
- Have not heard of those two. Also, I personally wouldn't be able to add cuberite since I quit mc after the whole chat reporting thing and have yet to look back.
  I'll definitely have to look into Beyond All Reason, though.
  Edit: Looked up BAR and my computer would go nuclear on me if I tried it considering the website for the game lists a minimum requirement of 16gb RAM and mine only has 16gb installed with 13gb available. My computer would melt in a matter of just trying to launch it, probably.
Open transport tycoon deluxe! Such an old but great game with many new features.
- I tried OTTD a few times and wasn't very good at it, so I haven't played it since because I gave up.
  I'll definitely have to try again some time.

Thunderbird. Hasn't bugged on me once.

Definitely OpenFOAM. It competes with commercial software that costs thousands of dollars.

I'm curious what you use it for? I was looking at it for possibly doing some automotive aero analysis on a track car. I want to design a custom flat bottom / diffuser. Currently my biggest problem is getting a quality scan to work off of. (I'm fairly technical, but completely new to CFD simulation)
- I use it for erosion simulations in piping systems. I work in kind of a niche field, and there really aren't any commercial tools that do what I need. With a fair bit of effort, OpenFOAM can be customized to do pretty much anything. It should be able to do a steady flow simulation over a vehicle right out of the box though. The hard part will be generating a mesh. I'd recommend doing that with specialized meshing software.

vim

I have used a lot of stuff over the years but my favorite would have to be a little command line program called cowsay. It takes whatever text you feed it and puts it in a speech bubble above a cow, hence the name.

I’ve been using Logseq after trying Notion and Obsidian a good bit and I’m really enjoying it. It’s a block-based note app that makes connecting thoughts together super easy. So far so goo!

VS Code

VSCodium takes the binaries for VS code and assembles it without Microsofts telemetry
VSCode is not free software. It's licensed under proprietary license. VSCodium is fully free software under MIT license.
VSCode is not free software. It's licensed under proprietary license. VSCodium is fully free software under MIT license.
I feel like VS Code / Chrome only sort of count

Linux, Tor, and the Ballistica game engine/BombSquad game (not fully open source as stuff used for sensitive data remains closed source 😔)

Edit: forgot git lol

https://www.kicad.org/

One of the few pieces of open source design software that I actually like

Neovim. It's an awesome editor and it has a great community and ecosystem.

Linux, of course. But another one that I use all the time, and love to death, is SageMath. It's the perfect blend of mathematics and programming for me.

Right now, it's Warpinator. Makes at-home wireless file transfers so damn SIMPLE.

Warpinator helps with transferring files over from PC to Steam Deck. Although KDE Connect is preinstalled on the Steam Deck, Warpinator just seems to work better / more consistently
- Agreed. Less troubleshooting.
I was about to say KDE Connect, for file transfere and other remote controls and communication between my devices
- To each their own. KDE Connect is great, I still recommend it, but I had a better experience with Warpinator.

Linux, Firefox, Apache

OpenSCAD and Gitlab. I can quickly iterate on designs through code, push it to my Gitlab instance, and have my CI/CD pipelines pick it up, render it, and automatically slice it in some common profiles to send to Octoprint

NetHack!

linux, godot, blender, neural amp modeler

Voyager, Firefox, Tachiyomi (J2K specifically), Bitwarden, Jellyfin and Findroid, Sonarr, LunaSea...there's so much I can't pick.

Suricata

Linux,KDE,Bitcoin,F-droid and everything built around them.

Keepass and firefox expansion Firefox of course Ninite to install and update software Newpipe / yt vanced : youtube alternatives obsidian : note taking (not sure if this is technically open source)

Have you tried AnyType as an alternative to Obsidian?

Qemu/kvm

QGIS and OpenStreetMap for mapping

yay

ShareX and it isn't even close

GCC, back in the days DJGPP in particular. As a child in the 1990s I could not afford the big name compilers like Watcom. And compared to DJGPP, all the “prized” Borland/Turbo stuff that my middle school prized (with segmented real mode), were practically Fisher-Price and Mattel compilers.

Wow, I'm too young to even imagine paying for compilers!

ReVanced. I love my ad-free, sponsor-blocking, Shorts-removing YouTube experience.

As a bonus, I also enjoy using Mp3tag. It's a program I can use to easily change and update the tags on all my music files, and it can even do it all in batches. It can also connect to various music services (Discogs, Musicbrainz, etc.) to get music tag info directly so you don't have to type it all in manually.

Agree, but Mp3tag isn't open-source.
- True. I wrote the comment in the early morning before going to bed, so I probably wasn't thinking clearly.

Media Player Classic (I'm unsure if the latest iterations are or even if the Home Cinema edition is open source), TOR, qbittorrent, firefox, thinderbird, obs to name a few that I use regularly.

Firefox, Neovim, Pass (password store) and Wezterm. I heavily use all four of them.

I also need to give a special mention to Aegis Authenticator on Android.

oh and grapheneos!!!

I’ve been liking Digikam and Rawtherapee (which is an awful name for the record) for photo gubbins.

Rawtherapee
I'm a darktable guy myself. I have tried Rawtherapee and was even an exclusive user of Art (RT fork) for a while, but darktable has everything I need in one package.
- I’ve only just discovered Darktable, so I was a bit reticent to call it one of my favourites, but for the relatively minimal editing I actually do, it does seem to be pretty ideal. I only use Digikam for organisational stuff really - do you find that Darktable’s filing/cataloguing ability is good enough that you only use the one program?

Firefox, GNU Linux, VLC, GIMP, Krita, Blender (even if I didn't used it that much), Lemmy of course with it's different FOSS clients

date-fns for saving my sanity when working with dates in JavaScript.

Bulk Crap Uninstaller

doas pacman -Syu (arch)

doas emerge -avuDN @world (gentoo)

uhh probably uhh AOSP and calyx os

Playnite, all your games in one launcher.

I really like wazuh. Its such a well put together product and feels like enterprise software. One of the best cyber security tools there is.

How can it be one? GNU/Linux, Firefox, EMACS, Ardour, Vitalium, SurgeXT, KX Studio (OK, this is repo), Carla, Gnome, Debian, MX Linux, XFCE, KDE Plasma, GIMP I am absolutely sure I am missing more s/w packages that I love but don't come to mind.

I really like to use Shotcut for video editing and Audacity for audio related things.

Barrier KVM RustDesk Bitwarden

As a music hoarder and RYM nerd, I'd have to say the entire MusicBrainz ecosystem, from the service itself to the tagger.

Dungeon Crawl Stone Soup!

Node Red

Neovim(astronvim ftw), Firefox,

Posting before reading because activity. Godot Engine, hands down. I used Unity for years and years and now that Godot 4.x is out, I'll probably never use Unity again. Unless it's for a job or something like that. All personal projects tho... I could probably make a game in Godot while waiting for Unity to start up.

RetroArch/M64Plus FZ

Xournal++ is really good for pdf creation/annotation. ✍️

Cygwin. 100%

Mi favorito que uso todos los días y no entiendo que no lo use todo el mundo es : thunderbird

My favorite that I use every day and I don't understand why not everyone uses it is: thunderbird

Librewolf, Wine/Proton, Linux, Zsh, VLC, GIMP, Kdenlive, Bitwarden.

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Qgis, Firefox! Comes top of mind

OBS Had to do some simple broadcasting at work and was surprised when I found OBS and all the features it had, all for free.

What an extremely hard question to answer, but I would probably go with Firefox.

Helix text editor.