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Bugzilla

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Free, open source web-based bug tracking system originally built by Mozilla

Bug Tracking Software Issue Tracking Software
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  • Deployment On Premises
  • Starting price Free
  • Free trial Not offered
  • Best for Startups, SMEs, Enterprises

What is Bugzilla?

Bugzilla is a free, open source, web-based bug and issue tracking system originally developed by Netscape and released by the Mozilla project in 1998. It is used by large open source projects including Mozilla, LibreOffice, Apache, and the Linux kernel to manage defect reports, with powerful Boolean search charts, product and component management, milestones, and time tracking.

Because Bugzilla is fully open source, there is no vendor license fee; teams download and self-host it on their own infrastructure at no cost. The project is independently funded through community sponsorship. Its interface is dated compared to modern trackers, but it remains valued for its search power, email integration, and long track record on large scale software projects.

Key Features of Bugzilla

Bugzilla lists 10 documented features, including Advanced Boolean search charts for complex queries, Automatic duplicate bug detection and Product and component management. The list below covers what the product does rather than how it is marketed.

  • Advanced Boolean search charts for complex queries
  • Automatic duplicate bug detection
  • Product and component management
  • Milestones and versioning
  • Time tracking for estimates and work logs
  • Email notification and bugmail integration
  • Custom fields and workflow states
  • Fine-grained user permissions and groups
  • Patch/attachment management with review flags
  • REST API for integrations

Bugzilla Pricing

Bugzilla lists one plan, at Free.

Open Source / Self-hosted

Free

Unlimited users (self-hosted)

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Free to download and self-host under the Mozilla Public License; no official paid tier or vendor support contract

Bugzilla Specifications

Bugzilla is available on web app. It offers an API and has a free plan.

Deployment
  • On Premises
Billing cycle
Onetime
Desktop
  • Web App
Languages
  • English
Built for
  • Startups
  • SMEs
  • Enterprises
Integrations
Git, CVS, Subversion via hooks, LDAP authentication, email/bugmail integration
Public API
Yes
Free trial
No
Free plan
Yes
Runs in browser
Yes
Customisable
Yes
Website
bugzilla.org

Bugzilla Videos

Bugzilla Screenshots

Bugzilla screenshot 1

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Bugzilla FAQs

Yes, Bugzilla is completely free and open source, with no vendor license fees for self-hosting.

Bugzilla was originally released by the Mozilla project in 1998 and is maintained as an independently funded open source project used by Mozilla, LibreOffice, the Linux kernel, and many other organizations.

Yes, Bugzilla provides a REST API for integrating bug data with other tools and scripts.

No official Bugzilla cloud service exists from the project itself; it is self-hosted software, though some third-party providers offer hosted Bugzilla instances.

Bugzilla offers Boolean Charts that let users build complex queries with multiple conditions, logical operators, and nested criteria, considered one of the more powerful search systems among bug trackers.