Got to early revenue and some pretty encouraging sustained compounding growth in my side-project-turned-startup: https://www.zerotier.com/

This is a three year old project. 2014 saw the first auto-updating binary releases on three platforms, the first commercial users, and the first revenue. It also made HN's front page twice: once for the site itself, and once for a blog entry that I wrote on the mechanics of NAT traversal.

Currently working on a lot of prep for a possible seed round in early-mid 2015. If all keeps going well it might happen.