What I use

Nix/Nixos - my laptop and cloud servers run Nixos
git - The best SCM with the worst UX
bat - A better cat
delta - A better diff
exa - A better ls
ripgrep - grep but better in every way. Thanks BurntSushi <3
fd - A better find
Intellij IDEA Ultimate - go to general purpose IDE
(doom) emacs - for config files and c/c++ projects. Magit also serves as my preferred git client
(ocasionally) neovim - anything other misc text editing needs
GNOME - My DE of choice
zsh - My favorite shell
oh my zsh - Zsh configuration framework
terraform - Infrastructure provisioning

1password - My favorite password manager
tailscale - I really can't recommend people try tailscale enough. It feels like magic
GitHub - Where I store all my code. I also run CI/CD with GitHub workflows
Purelymail - Email hosting
AWS - The DNS for all of my domains is via Route53
Digital Ocean - Hosting for personal projects and clients with non mission critical workloads
fly.io - For highly available hosting. This site is hosted on fly geo-distributed accross the United States

React - The popular frontend framework
Remix - My current favorite full stack web framework
Typescript - A typed language that compiles to JS. This is now mandatory for all my new JS projects
Prisma - Current favorite ORM
Planetscale - Hosted Vitess database. It's great
redis - General purpose cache and session store
TailwindCSS - A toolkit for building beautiful frontends even if you are, like me, not a designer
prettier - Code formatting
eslint - Enforces best practices

Brave Browser - I begrudgingly use a chromium based browser and brave is usually the least bad one of those
Spotify - Essential for getting anything done
Element - Free as in beer, free as in freedom instant messaging
Discord - Free as in beer instant messaging
Thunderbird - Email client that stays out of the way and consistently works
For most other desktop tasks I just use the bundled GNOME apps, they do the job