Redmine is a flexible project management web application. Written using the Ruby on Rails framework, it is cross-platform and cross-database.
GitHub is the best place to share code with friends, co-workers, classmates, and complete strangers. Over three million people use GitHub to build amazing things together.
Jira's secret sauce is the way it simplifies the complexities of software development into manageable units of work.
Jira comes out-of-the-box with everything agile teams need to ship value to customers faster.
GitLab offers git repository management, code reviews, issue tracking, activity feeds and wikis. Enterprises install GitLab on-premise and connect it with LDAP and Active Directory servers for secure authentication and authorization. A single GitLab server can handle more than 25,000 users but it is also possible to create a high availability setup with multiple active servers.
Asana is the easiest way for teams to track their work. From tasks and projects to conversations and dashboards, Asana enables teams to move work from start to finish--and get results. Available at asana.com and on iOS & Android.