MantisBT

MantisBT is one of the oldest active open source bug trackers, first released in 2000 and still maintained today. It is a PHP application with a MySQL or PostgreSQL backend that handles issue creation, assignment, prioritisation, status tracking, and notification — the full lifecycle of a bug from report to resolution.

The email integration is the feature that separates MantisBT from simpler trackers. Issues can be submitted by email, and every status change and comment triggers a notification to relevant parties. Critically, users can reply to those notification emails and have their response recorded as a note on the issue. For teams managing external stakeholders or customers who would not naturally log into a web tracker, this creates a usable workflow without forcing a behaviour change.

Custom fields give you control over what information is collected per issue. Add a “browser version” field for a web product, a “customer name” dropdown for a support context, a “severity” scale that matches your internal process — these are defined in the admin panel without touching code. Issue categories, priorities, and resolutions are also configurable, so the system can be shaped to fit the team’s actual vocabulary.

The plugin ecosystem extends the core for more specific use cases. Time tracking, source control commit integration, advanced reporting, and email digest formats are all available through community plugins without forking the main codebase.

The honest limitation is visual age. MantisBT’s interface reflects its early-2000s origins and has not received a modern UI overhaul. For teams accustomed to Jira, Linear, or GitHub Issues, the aesthetics require adjustment. The functionality is solid; the experience is utilitarian.

MantisBT: Pros & Cons