PlantUML : PlantUML is an open-source tool allowing users to create UML diagrams from a plain text language
Kinto : Kinto is a lightweight JSON storage service with synchronisation and sharing abilities.
Mockoon : Mockoon is the easiest and quickest way to design and run mock APIs. No remote deployment, no account required, free and open-source.
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...
Synthesis ToolKit : The Synthesis ToolKit in C++ (STK) is a set of open source audio signal processing and algorithmic synthesis classes written in the C++ programming la...
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.