Rails, the whole ecosystem around it and Ruby. Webdev tooling in general.
The Linux/macos tools. Things like iterm, fzf, git.
Just scratching the surface here - I feel itโs brilliance and generosity all the way down. A lot to be grateful for.
I am more thankful for Free Software (preserving user freedoms) than for Open Source Software (free labour for corporations, screw users), but when it comes to OSS I suppose I am most thankful for SBCL.
uBlock Origin, hands down. Non-shitty, non-corporate adblocker that both works out of the box and offers great customization options? Amazing! UBlock Origin Lite is the best Manifest V3 compatible adblocker, and it's okay (when someone's sharing their screen on Zoom and I see how many ads there are, I'm surprised), but it's not as good.
I was debating between various other things (Firefox? Linux? LibreOffice? VLC media player?) but quite frankly I'm not as thankful for any of them.
Linux, Firefox, curl.
In Ascending order.
Besides for the obvious...
newsboat, shellcaster (podcast manager), yt-dlp
apps/frameworks: firefox, ffmpeg, curl, virtualbox, vlc, Git
kexts: AppleALC, IntelMausi, lilu, USBInjectAll, VirtualSMC, WhateverGreen, SMCSuperIO, SMCProcessor
Django
GNU/Linux
wickedengine, physx, sdl.
Reactjs
Node.js
The Windows ports of Vim, Pine (now Alpine) and par made working on Windows tolerable.
http://alpineapp.email/ http://www.nicemice.net/par/