Grin is an implementation of the Mimblewimble protocol. 100% open-source and community-driven. There's no ICO, no pre-mine, and no founder's reward. Repo at <a href="https://github.com/mimblewimble/grin" rel="nofollow">https://github.com/mimblewimble/grin</a> and more info available at <a href="http://grin-tech.org/" rel="nofollow">http://grin-tech.org/</a>