GitHub hosts powerful open source apps you can use daily, from Immich for photo backups and Upscayl for image upscaling to VERT for file conversion, BC Uninstaller for cleanup, Mole for Mac storage, ...

You didn't choose these defaults, did you?

If Windows is your preferred operating system, consider these open-source apps. There are numerous open-source apps available for almost any task. These are all free to install and use on Windows.

There are a few apps I must install on any new Android phone. Without them, using my handset would be quite challenging. These include the usual suspects like shopping and banking apps, browsers, AI ...