It depends on how you define failure. Fogbugz didn't dominate the market like Jira did, but it had a dedicated customer base. It's revenue was used to fund the

It depends on how you define failure. Fogbugz didn't dominate the market like Jira did, but it had a dedicated customer base. It's revenue was used to fund the development of Trello in the early days, and to fund the first 2~ years of development on Glitch. When FogBugz was sold off, it was still a modestly profitable business that a better acquirer could have stewarded into a better performer but the bug/issue tracking market is/was really tough. Source: I used to work at Fogcreek, did some light dev/design work for FogBugz, and was the co-creator of Glitch.