Redmine is a flexible, self-hosted project management web application written in Ruby on Rails, intended for teams and organizations that need to run their own project and work management platform.

What it is

Redmine is a flexible project management web application built with the Ruby on Rails framework. The project is distributed on GitHub as a mirror of the official Subversion repository located at https://svn.redmine.org/redmine. Its category in this registry is Business Software / Project & Work Management, and its homepage is https://www.redmine.org. The tagline describes it as "Flexible project management you can host yourself," which indicates that self-hosting is a core characteristic. The GitHub description identifies the repository as a mirror of the Redmine code source and provides contact information: @vividtone or maeda (at) farend (dot) jp. The repository has 6032 stars, 2470 forks, 3 open issues, and the last push occurred on 2026-09-16. No topics are listed for the repository.

The concrete problem Redmine solves is providing a project management platform that organizations can operate on their own infrastructure rather than depending on an externally hosted service. By being a web application written in Ruby on Rails, it requires a compatible server environment but gives users control over their data and configuration. It replaces the need for a hosted or proprietary project management subscription with a self-hosted alternative. The README notes that more details can be found in the doc directory of the repository or on the official website at https://www.redmine.org. The ecosystem it lives in is Ruby on Rails, and the specific thing it replaces is a hosted project management service, since the tagline emphasizes the ability to host it yourself.

Key capabilities

• Provides flexible project management functionality as a web application, as stated in the README.
• Runs on the Ruby on Rails framework, which is the named technology stack.
• Supports self-hosted deployment, as indicated by the tagline "you can host yourself."
• Makes source code available as a mirror of the official Subversion repository at https://svn.redmine.org/redmine.
• Includes documentation in the doc directory and on the official website at https://www.redmine.org.
• Is distributed under a license identified as NOASSERTION.
• Shows active development with a last push on 2026-09-16 and 3 open issues.

Who uses it and how

• Self-hosting organizations that want to run project management on their own servers, as implied by the self-hosting tagline.
• Teams that require a web-based project management tool, since Redmine is a web application.
• Environments with Ruby on Rails support, because the application is written using that framework.
• Administrators and users who refer to the doc directory or official website for setup and usage details.
• Projects that prefer to access source code from a mirror repository rather than a proprietary distribution.

Getting started

Installation and deployment instructions are provided in the doc directory of the repository and on the official website at https://www.redmine.org.

How it compares

The provided facts do not name any similar tools or list of paid products that Redmine replaces. Therefore, Redmine stands alone in this registry entry, with no direct comparisons available from the given information.

When to use it — and when not to

A self-hoster must operate the full Ruby on Rails application stack, but the provided facts do not detail specific dependencies such as a database or mail server. The license is marked NOASSERTION, which may create uncertainty for organizations requiring a clearly identified open-source license. The README excerpt is very brief and the topic list is empty, so evaluators should consult the doc directory and official website before adopting Redmine.