PiPer - A DIY Minecraft computer to build gadgets
Brusher - Tiny library to add interactive backgrounds to webpages
Helium - Helium lets you accept payments by credit card for anything you want to sell online.
Webflow Interactions - Design and build web animations and interactions
PiP for Mac - Always on top window preview similar to the popular windows only OnTopReplica
Spott - API to work with cities, countries and political divisions.