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