1 - Bugzero 4.1.7 Bugzero is a web-based bug tracking, defect tracking, issue tracking, and change management system used in a distributed team environment to track software bugs, hardware defects, test cases, or any other issues. Bugzero can also be used equally well as a helpdesk customer support, trouble ticketing, or email management system to collect and manage customer feedbacks, incidents, requests, and issues. License: Shareware OS: Unix