List some bug tracking software?

Submitted by: Ali Hassan Siddiqui
Here are some bug tracking software:
☛ Bugzilla
☛ JIRA
☛ Mantis
☛ Trac
☛ Redmine
☛ HP ALM/Quality Center
☛ FogBugz
☛ IBM Rational ClearQuest
☛ Lighthouse
☛ Zoho bug tracker
☛ The Bug Genie
☛ BugHost
☛ DevTrack
☛ BugNET
☛ eTraxis
Submitted by: Ali Hassan Siddiqui

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