Open Source Alternatives to Jira

Plane

The open source project management tool.

OpenProject

Project management liberation - Enterprise capabilities without enterprise shackles

Planka

A Trello lookalike you host yourself, with a license worth reading first

Redmine

A long-established, flexible project management and issue tracking web application built on Ruby on Rails.

Issue tracker for software and general projects

Agile project and test management

Taiga

Free and open-source project management system for agile teams.

Issue tracking and project management tool

Project management and issue tracking

Issue tracking system with email integration

Orangescrum Community Edition

Self-hosted project management with kanban boards, time logs and workflows

Tuleap

An open source, enterprise-class Application Lifecycle Management (ALM) suite.