Phonebot - Make phone calls from within a Slack channel
Luno - Money, reinvented
Milligram - A minimalist CSS framework
ShareAccount - Share your account without giving out your password
Quickie - 3-60 second video calls with your friends
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.