Preceden [1], a tool for making timelines, was profitable almost immediately. Heroku costs about $50/month and a premium account costs folks $29, so with 2+ upgrades/month it is profitable. Currently making ~$700/mo.
jMockups [2], an HTML5-based web-design tool, was publicly launched about 4 months ago and is still not profitable. Costs total $200/month and with one paying customer, I've got a ways to go before profitability (but it's progressing very well).
Preceden [1], a tool for making timelines, was profitable almost immediately. Heroku costs about $50/month and a premium account costs folks $29, so with 2+ upgrades/month it is profitable. Currently making ~$700/mo.
jMockups [2], an HTML5-based web-design tool, was publicly launched about 4 months ago and is still not profitable. Costs total $200/month and with one paying customer, I've got a ways to go before profitability (but it's progressing very well).
Recent blog post has more details:
http://www.mattmazur.com/2011/03/february-in-review-life-tra...
[1] http://www.preceden.com
[2] http://www.jmockups.com