Looking for some windows programs that are helpful that people don't really mention?

If I would have been asked to choose one really useful piece of software on Windows it would be Agent Ransack. I use it to find strings in a bunch of files, even compressed ones. I believe it can do much more but I use it for this purpose on daily basis. There's a paid version but the light one is free and does all I need. https://www.mythicsoft.com/agentransack/