Best software defect tracking tool ?

Backlog is one of the popular bug and project tracking tool which is reliable . It's very easy for anyone to report bugs and to keep track of a full history of issue updates and status changes in the system . The Development teams use Backlog to work with other teams and to enhanced the team collaboration and high-quality project delivery to the company .
• Search and advanced search features
• Full history of issue updates and status changes
• Project and issues with subtasks
• Gantt Charts and Burndown charts
• Wikis and Watchlists
• Easy bug tracking tool
• Git and SVN built-in
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