cal.com : Open source meeting scheduling tool. Send a link, let others book a slot. Calendly alternative.
Outline : Team wiki, documentation, meeting notes, playbooks, onboarding, work logs, brainstorming, & more…
Searx : Searx is a free internet metasearch engine which aggregates results from more than 70 search services. Users are neither tracked nor profiled. Additio...
Infection Monkey : The Infection Monkey is an open source security tool for testing a data center's resiliency to perimeter breaches and internal server infection. The M...
Mattermost : Mattermost is a self-hosted solution for bringing all your team communication to one place, and making it searchable and accessible anywhere
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.