I generate about $700/month from a web-based timeline tool called Preceden that I built in about six months in my spare time [1].
Preceden's been in maintenance mode for about a year now, as most of my free time is spent working on a new web design tool called Lean Designs (formerly jMockups) [2]. Lean Designs isn't profitable yet, but it's getting there. Preceden, meanwhile, continues to grow organically. Lean Designs is more of a swing-for-the-fence project, but I've got high hopes for it.
Plan is to transition to full time sometime in the fall of next year.
Preceden's been in maintenance mode for about a year now, as most of my free time is spent working on a new web design tool called Lean Designs (formerly jMockups) [2]. Lean Designs isn't profitable yet, but it's getting there. Preceden, meanwhile, continues to grow organically. Lean Designs is more of a swing-for-the-fence project, but I've got high hopes for it.
Plan is to transition to full time sometime in the fall of next year.
[1] http://www.preceden.com
[1a] http://news.ycombinator.com/item?id=1114834
[2] http://www.leandesigns.com
[2a] http://news.ycombinator.com/item?id=2497266