Zulip : Powerful slack-like open source group chat
Novu : Novu provides a unified API that makes it simple to send notifications through multiple channels, including In-App, Push, Email, SMS, and Chat. With N...
Sonic Pi : Sonic Pi is a new kind of musical instrument. Instead of strumming strings or whacking things with sticks - you write code - live.
Sonic Pi is a compl...
Beehive : Beehive is an event and agent system, which allows you to create your own agents that perform automated tasks triggered by events and filters. It is m...
cal.com : Open source meeting scheduling tool. Send a link, let others book a slot. Calendly alternative.
CryptoZombies is a free, open source, interactive code school that teaches you to build games on Ethereum. The course is designed for beginners to Solidity and starts off with the absolute basics.