Redmine is a free, web-based project management and problem tracking tool. This tool is written using the Ruby on Rails (RoR) framework. It allows users to handle numerous projects and subprojects. Redmine includes calendar and Gantt charts that help manage the visual representation of projects and their deadlines. It can be integrated with diverse version control systems, including repository browser and diff viewer.

• Multiple Project Support: Redmine allows you to access multiple projects available in the list, and you can make changes using it.
• Role & Permissions: A role is a group of permissions that allows you to define the permissions that the members have on a project.
• Time Tracking: Using this feature, users can track logged work hours to a specific issue or project.
• Multiple LDAP Authentication Support: Redmine natively sustains LDAP authentication by employing one or multiple LDAP directories.
• Custom Fileds: This feature allows you to add additional information to various sorts of data utilized in Redmine.