It was innovative 13 years ago, but never really caught on.

Kiln was also a great product and allowed for using both Git and Mercurial. It was way better than anything else at the time, but lost out to Github.

I always liked Spolsky's Evidence Based Scheduling that was built into the products.

https://fogbugz.com/evidence-based-scheduling/

> Kiln was also a great product and allowed for using both Git and Mercurial. It was way better than anything else at the time, but lost out to Github.

I used both FogBugz and Kiln at a previous employer, and I really liked FogBugz, but we had nothing but problems with Kiln. We had a fairly large team (maybe 75-100 people) and a good sized project (maybe 300k lines), and it was painfully slow to do anything in Kiln and it was down/broken at least once a month. It wasn't so bad early on when we were small, but it didn't scale with us very well.

No. It isn't. Having recently moved (a year ago) from FogBugz to Jira it's like a fresh breeze has blown into our case management process.