Yes. I have a suit of watermarking apps under the uMark name. Although I also have a full time job, I make as much money from uMark as I make from my job. I can

Yes. I have a suit of watermarking apps under the uMark name. Although I also have a full time job, I make as much money from uMark as I make from my job. I can easily live on any one of the incomes. The app is developed in .Net way back in 2006 and I keep updating it periodically.