Bulma - Bulma is an open source CSS framework based on Flexbox and built with Sass. It's 100% responsive, fully modular, and available for free.
Phonebot - Make phone calls from within a Slack channel
Milligram - A minimalist CSS framework
ShareAccount - Share your account without giving out your password
Wing-project.org - WING - Wireless Mesh Network for Next-Generation Internet
React95 - Refreshed windows95 UI components for modern web apps