Pricepeek - Compare prices of the same product across all Amazon locales
Phonebot - Make phone calls from within a Slack channel
Wing-project.org - WING - Wireless Mesh Network for Next-Generation Internet
ShareAccount - Share your account without giving out your password
pgAdmin - pgAdmin Website
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.