Profitable developer tools database - A database of 103+ hand-curated profitable developer tools
Flox - Manage and share development environments with all the frameworks and libraries you need, then publish artifacts anywhere. Harness the power of Nix.
LaunchKit - Open Source - A popular suite of developer tools, now 100% open source.
whatdevsneed - This is whatdevsneed.
Utilso - All-in-one tools for developers
SmallDevTools - Handy developer tools with a delightful interface