Most of the internet runs on free software starting with GNU and Linux, so that’s a big one. The most popular HTTP server stacks are free including PHP and Node.

But as a single application, I nominate Blender.

Wikipedia.

Firefox (and its forks)

Kde connect

GNOME Boxes, works much better than stuff like virtualbox and uses Qemu under the hood.

Calculator.

intended link: https://lemmy.zip/post/30667570

i crossposted wrong or something?