control-f "open source" says nothing, so at minimum your title is wrong but <a href="https://redplanetlabs.com/docs/~/downloads-maven-local-dev.html#_downloads" rel="nofollow noreferrer">https://redplanetlabs.com/docs/~/downloads-maven-local-dev.h...</a> says<p>> mastodon, our Twitter-scale Mastodon implementation in only 10k lines of code (available on August 29th).<p>so did you just jump the gun?<p>p.s. the 361 comment thread to save someone the trouble of "what's this?" <a href="https://news.ycombinator.com/item?id=37137110">https://news.ycombinator.com/item?id=37137110</a>