TeamGantt was cofounded in 2009 by John Correlli and Nathan Gilmore. At the time, they were both developing software for a large roofing contractor in Baltimore, Maryland. After searching hard for a good way to schedule and collaborate on projects online, they couldn't find anything that did both well. They decided to tackle the challenge of building what would eventually become TeamGantt on nights and weekends. They soon realized that other companies might be interested in the product as well. As soon as an early version was ready, they made it available for others to try. It quickly became a hit, as many others were looking for the same thing!
After iterating on user feedback and paying close attention to usability, TeamGantt was officially launched in November 2010. Within a few hours, they had a handful of customers, and in that first year, they attracted big names such as Twitter, Expedia, and Turner Broadcasting. To this day, TeamGantt continues to help teams large and small from every industry work smarter on their projects.