Bitwarden is one I use several times a day. They do have a support plan for like $10 a year that gives a couple extra features like TOTP support, but the base level is incredibly robust. It’s open source, too. I know a lot of folks also host their own servers with Vaultwarden, but that’s a little beyond my skill level.
7-zip
Genuinely free? VSCode
Freemium: Discord
You pay with your data: Google Maps
If there’s one service that I’m okay giving my data over for, it’s Google maps.
Without that, we wouldn’t have traffic data or how busy a business is. Crowd sourcing information is the only way to get a service as good as google maps. It’s actually amazing to me that it’s free given all of the satellite and street imaging done.
LibreOffice for word processing and spreadsheets.
Bitwarden and firefox
I don’t use it but blender is another one
Firefox, ppsspp, termux, VLC, Tachiyomi(SY), and KeypassXC/DX are coming to my mind. Probably there are a lot more. These are for android. Although they do apply to desktop except termux and Tachiyomi.
Edit: I haven’t added the various FOSS tools as they don’t really come in “App” Category. Some of them:
- Linux kernel
- git
- gcc
+1 for Firefox and VLC. Always amazes me that such good programs are available for free. Remember to donate to FOSS projects, people!




