LaunchKit - Open Source - A popular suite of developer tools, now 100% open source.
Widgeridoo - Custom and pre-made widgets for iOS and macOS
SmallDevTools - Handy developer tools with a delightful interface
Glimpse - Discover trends before they're trending
Profitable developer tools database - A database of 103+ hand-curated profitable developer tools
Onward - Get tech-life balance by cutting down on technology overuse