Tetrisly - Starter kit for design systems and wireframes builder (Sketch/Figma)
Uppy - The next open source file uploader for web browsers
Material Design Kit - Design for Android better and faster
Dropbase by Castodia - Turn your CSV files into live databases in seconds
React Rainbow Components - Build your web application in a snap.
Sheety - Turn any Google sheet into an API instantly, for free. Power websites, apps, or whatever you like, all from a spreadsheet. Changes to your spreadsheet update your API in realtime. Neat