Ask HN: Share your profitable side project?

No longer a side project since I made the switch to work on it full time, but my stock option scanner SaaS [0] is profitable and my main source of income.

[0] https://omnieq.com

ArcartaPay https://arcartapay.com/

Started off as an email a link to get paid with Stripe for art dealers but now has a focus on the due diligence and was well-timed with some EU money laundering regulations.

Growing revenue 150% month on month and will likely have to become my main source of income soon.

Webase [1] is a no-code platform for building CRUD apps without writing early code. It has found a niche in being able to dynamically generate PDFs based off of forms combined with business documents for things like Real Estate contracts.

Website still needs to communicate the value more, but it is a fun project to keep improving.

[1] https://www.webase.com

PSA to folks who answered this: if you have a profitable side project, double down and try making it into something more than a side-project.

If you've built something that is actually collecting revenue, you're already ahead of a huge number of folks out there, and you can likely build it into something that can at the very least make you live comfortably, if not much more.