Bugzilla is a “Defect Tracking System” or “Bug-Tracking System”.
Defect Tracking Systems allow individual or groups of developers to keep track of outstanding bugs in their product effectively. Most commercial defect-tracking software vendors charge enormous licensing fees.
It supports the following features: report bugs, assign bugs to the appropriate developers, prioritize bugs, set bug dependencies, and arrange bugs by product and component.
Bugzilla is an enterprise-class piece of software that tracks millions of bugs and issues for hundreds of organizations around the world.
Key Features
- Optimized database structure for increased performance and scalability.
- Security to protect confidentiality.
- Advanced query tool that can remember your searches:
- Basic Google-like bug search that is simple for new users and searches the full text of a bug.
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- Very advanced search system where you can create any search you want.
- Integrated email capabilities.
- Editable user profiles and comprehensive email preferences.
- Comprehensive permissions system.
- Proven under fire as Mozilla’s bug tracking system.
Website: www.bugzilla.org
Support: Documentation
Developer: Mozilla Foundation
License: Mozilla Public License 2.0

Bugzilla is written in Perl. Learn Perl with our recommended free books and free tutorials.
Related Software
| Debuggers | |
|---|---|
| LLDB | Next generation, high-performance debugger |
| Ghidra | Software reverse engineering framework |
| Delve | Source level debugger for the Go programming language |
| GDB | The GNU Debugger |
| Valgrind | A memory debugger and profiler |
| Radare2 | Portable reversing framework |
| BugStalker | Rust debugger |
| Xdebug | Extension for PHP to aid debugging and development |
| Seer | GUI frontend to GDB |
| iaito | Graphical interface for radare2 |
| KDbg | Graphical user interface to GDB |
| strace | Diagnostic, debugging and instructional userspace utility |
| rr | Record-and-replay debugger |
| gf | Lightweight GDB interface with source, stack and memory views |
| drgn | Programmable debugger that puts scripting at the centre |
| cgdb | Lightweight console frontend to the GNU debugger |
| PuDB | Console-based visual debugger for Python |
| nnd | Partially inspired by RemedyBG |
| bashdb | Source-code debugger for bash; follows the GDB command syntax |
| PINCE | Memory scanning, process manipulation and reverse engineering |
| edb | Low-level debugging with disassembly and register inspection |
| Sysprof | Profile an application or entire system |
| crash | Linux kernel crash analysis utility |
Read our verdict in the software roundup.
| Issue Tracking Systems | |
|---|---|
| OpenProject | Collaborative project management with planning and tracking |
| Zammad | Web based open source helpdesk/customer support system |
| Plane | Modern project management for issues, cycles, and roadmaps |
| Request Tracker | Mature enterprise-grade issue tracking system |
| MantisBT | Issue tracker implemented in PHP and using MySQL as a database |
| osTicket | Customer support ticket system |
| Fossil | Distributed version control system, bug tracking system and wiki server |
| Bugzilla | Bug Tracking System available through a web interface |
| Roundup | Simple-to-use and install issue-tracking system |
| Trac | Issue tracker implemented in PHP and using MySQL as a database |
| Redmine | Flexible project management web application |
| Flyspray | Simple, web-based bug tracking system written in PHP |
| Znuny | Fork of OTRS |
| Eventum | User friendly and flexible issue tracking system |
| FlowInquiry | Manage tickets, workflows and SLA tracking |
| Pachno | Friendly issue tracking |
| OpenSupports | Simple ticketing system |
| Phorge | Ccmmunity-maintained fork of Phabricator |
| Qisutu | Straightforward ticket management for teams and support workflows |
Read our verdict in the software roundup.
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