LaunchKit - Open Source - A popular suite of developer tools, now 100% open source.
<m>bedify - No-Code Embeddable UI Widgets for Solopreneurs
whatdevsneed - This is whatdevsneed.
embadr - The first embeddable widgets library
SmallDevTools - Handy developer tools with a delightful interface
FastSpring - With FastSpring, software companies sell more, stay lean, and compete big.