I shared Cachet [0] 551 days ago, it's an open source alternative to the likes of StatusPage.io and Status.io. It's now used around the world by hundreds if not thousands of companies and I'm always seeing comments on others such as "I wish you could do X like Cachet." which is really cool.

I've made money only by selling an installation service, which is about £1k. I have further plans, but nothing more to add.

[0] https://news.ycombinator.com/item?id=8819701