Holy crap, I remember seeing these kinds of threads before and being amazed by people making good money from a side-project, I can't believe I'm now one of them!

My project is BugMuncher - https://www.bugmuncher.com - a website feedback tool I created back in 2011, and it's currently making $1,489 Monthly Recurring Revenue.

Strictly speaking it's not a side project anymore, as in Sept 2015 I fired all my freelance clients to focus on BugMuncher full time, but I've never taken funding, and I'm the only person working on it, so it still feels like a side project :)

If anyone is interested I've been writing a blog series about my mission to go from side project to profit, which starts here - https://blog.bugmuncher.com/2015/10/22/from-side-project-to-...