Pivotal Tracker has been around for a fair while now; it's usually compared to JIRA. They have quite different DNA. Tracker grew out of Pivotal Labs and it is

Pivotal Tracker has been around for a fair while now; it's usually compared to JIRA. They have quite different DNA. Tracker grew out of Pivotal Labs and it is mostly molded to how Labs and R&D teams do their daily and weekly work. To me it seemed constricted and limited until I came to work at Pivotal; now it makes sense.