Kwestie is a new take on the same problem, issue tracking. There are some significant differences in Kwestie from other systems like bugzilla, fog bugz, mantis, and more.

Kwestie is designed to be simple. A system of plugins is required to add complex behaviors, while the default behaviors are clean and simple.

Kwestie is built to be distributed and understand other kwestie systems and how to connect to them. The plays into how the Open Source model works, though it isn't tied to that model, of having an upstream system and several downstream consumers who have their own issues of which some will be forwarded on to the upstream tracker. Pieces like XML views of issues for transfering, OpenID services for quick account creation enable this process.