The best open source alternative to Redmine is Taiga.io. If that doesn't suit you, our users have ranked more than 100 alternatives to Redmine and loads of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Redmine are Kan.bn, OpenProject, Odoo and Kanboard.
Agile project management platform with visual Kanban and Scrum boards, issue and ticket tracking, customizable workflows, dashboard/reporting, time tracking, multilingual support, free and premium SaaS, Open Source, and integrations for team collaboration.
Open source kanban platform offering team collaboration, workspace members, board visibility controls, Trello import, card labelling, detailed activity logs, commenting, and self-hosting options, plus upcoming board templates and third-party integrations.
Open source software that enhances team collaboration and productivity through features like Gantt charts, issue tracking, Scrum support, and document management. Supports classic, agile, or hybrid management styles while ensuring robust data protection and flexible task assignment.
OpenProject has everything locked up behind the subscription. Redmine is truly free and open source while open project is not
Open-source business application suite developed in Python, offering ERP, CRM, e-commerce, and project management, reducing software needs and synchronization costs with over 260 core modules.
Open source alternative supporting project management, issue and task tracking, custom workflows, Kanban, list, calendar views, analytics, imports, secure encryption, Slack and GitHub integrations, Agile and Waterfall frameworks, and advanced customization.
Trac is an enhanced wiki and issue tracking system for software development projects. Trac uses a minimalistic approach to web-based software project management. Our mission is to help developers write great software while staying out of the way.
Trac can manage only one project. Redmine able to manage multiple projects.
Worklog is a local-first desktop project manager for small development teams. It is built for fast, keyboard-first planning with a Kanban workflow and zero cloud dependency for core usage.
Launchpad is a collaboration and Bazaar code hosting platform for (primarily open-source) software projects.
Self-hosted agile platform enabling humans and AI agents to collaborate as equals on a unified real-time Scrumban board, manage projects, sprints, and stories with in-app AI chat, plugin extensions, BDD tools, sandbox security, and privacy-focused design.
Mantis Bug Tracker is a free and open source, web-based bug tracking system. It is written in the PHP scripting language and works with MySQL, MS SQL, and PostgreSQL databases and a webserver. MantisBT can be installed on Windows, Linux, Mac OS, OS/2, and others.
It's a bilateral relation because redmine is first a good alternative to Mantis I prefer mantis for complex projects
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Redmine is based on repo management. Taiga is more "project" management. IE: doesn't deal with code at all.