Peer-to-peer file transfers in your browser
Cooked up by Alex Kern & Neeraj Baid while eating Sliver @ UC Berkeley.
Using WebRTC, FilePizza eliminates the initial upload step required by other web-based file sharing services. When senders initialize a transfer, they receive a "tempalink" they can distribute to recipients. Upon visiting this link, recipients' browsers connect directly to the sender’s browser and may begin downloading the selected file. Because data is never stored in an intermediary server, the transfer is fast, private, and secure.
(Your PC must be online while the recipient download the file(s), if you shutdown the PC or goes offline, the download also stops)
It is optimized for the case where you commonly send files to the same devices. For example I have set up all of my devices as well as my partner's phone and Steam Deck. Then I can just tap them and send the file with end-to-end encryption.
It is sort of cool that there is no backing server, just static files. All of the signalling goes over WebPush.
That's a good point, I worded it poorly. The backing server is provided by you (via your browser). In theory you could run your own or whatever you want. But all traffic is encrypted so it doesn't matter much who runs it.
Only somewhat related, but is there an easy tool for sending files from one device to another when on the same network? I imagine that scenario shouldn't need some third party server to connect to but I've yet to find a tool like this.
KDE Connect should fit the bill; despite the name, you don't need to be using KDE (or Linux even) since there are clients for every major OS, even mobile.
Among many other cool features, it lets you easily and simply just send a file from one device directly to another on your local network. I use it all the time to send photos from my phone to my desktop without plugging anything in, for example.
Others told about snapdrop, sharedrop, localsend etc.
But depending on what devices you are talking about, you might do with just an http server.
I have a file manager on my (android) phone with a http server built in, and my laptop is connected to it via WiFi hotspot all the time. I just start a server on my phone and use a browser or any other download tool (curl, wget) to transfer files from my phone to my laptop.
If you have python installed, you can run an http server on any device you have (for example, a laptop) via python -m http.server and access your files from any other device on the same network by manually typing your local IP into a browser.
Syncthing accomplishes both local and Internet transfers and doesn't need a third party server (if you're not doing NAT traversal). I don't think you can send individual files through it's interface. But you can share a directory and any files you add (or edit) will sync via P2P to other devices.
You can't really do this on the web as devices can't directly connect to one another. You need some signalling server to bootstrap the transfer. However almost all of these WebRTC services will actually do the transfer locally if both devices are connected to the same network and can talk to one another directly.
To be fair, this one's been around for a while and I believe it's actually p2p, iirc. Wormhole stores your files on their servers for a little bit if they're < 5 Gb.
Yes, there are several p2p apps. Some years ago I used O&O FileDirect, which is very good, free, private (by deinition in this type o sharing), fast and easy to handle, but it's proprietary soft by an German company and Windows only.