FogBugz is an integrated web-based project management system featuring bug/issue tracking, discussion forums, wikis, customer relationship management, and evidence based scheduling. Developed by Fogcreek
License: Commercial
Request Tracker is a highly customizable issue tracking system favored for its flexibility and strong community support, making it ideal for complex workflows. In contrast, FogBugz offers a more user-friendly interface with built-in collaboration tools and strong time tracking, making it suitable for teams seeking ease of use and effective project management.