MacDown - MacDown is an open source Markdown editor for OS X, released under the MIT License.
Ethereum Syllabus - A complete Ethereum learning track, packed with resources
Frost - An open API for Blockchain timestamping
Ethereum Live - All the latest updates on Ethereum
iA Writer - Minimal Design, Maximum Focus
Metaplay.io - Build and operate Unity games at scale, featuring a liveops platform, game economy pipelines, scalable cloud servers, game programming tools, and more.