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Bugzilla — Bug tracking (Open Source)

Bugzilla is an open-source Bug tracking solution from Mozilla. Compare it against 1 other Bug tracking tool on FreeSoftwareX — by features, licensing and price — and request a quote or demo free in 2026.

What is Bugzilla?

Bugzilla is open source — its source code is publicly available and free to use, modify and self-host, usually with an active community and no licensing fees. It is categorised under Bug tracking and published by Mozilla. Buyers typically evaluate Bugzilla when they need a dependable Bug tracking option and want to weigh the trade-offs between free, open-source and paid tools before committing.

Bugzilla alternatives

If Bugzilla isn't the right fit, compare these Bug tracking alternatives side by side:

MantisBT

Frequently asked questions

Is Bugzilla free?
Yes. Bugzilla is open source and free to use, with no purchase cost for the core product.
What are the best Bugzilla alternatives?
Popular Bug tracking alternatives to Bugzilla include MantisBT. See the full list of Bug tracking on FreeSoftwareX.
What type of software is Bugzilla?
Bugzilla is an open-source Bug tracking tool developed by Mozilla.

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