Redmine!

Wrike's end-to-end solution takes your projects from initial request to tracking work progress and reporting results. With Wrike, you'll be able to create and delegate tasks, track deadlines, visualize your plans on the Gantt chart, and share reports. If needed, you can use advanced features like Custom Workflows, advanced security, restricted data access and more. Wrike is a powerful yet user-friendly solution that helps you achieve your project goals.

Taiga is a full featured project management platform for startups and agile developers & designers who want a simple, beautiful tool that makes work truly enjoyable.

SourceForge is a web-based source code repository. It acts as a centralized location for software developers to control and manage open source software development. SourceForge repository hosts more than 324,000 projects and has more than 3.4 million registered users, although not all are active. Features include support for CVS, SVN, Bazaar, Git or Mercurial repositories, project wikis, metrics and analysis, access to a MySQL database, and unique sub-domain URLs.

Trusted by 11,000+ businesses, JIRA is the leading bug tracking, issue tracking and project management tool. JIRA combines issue tracking, agile project management, customisable workflow, and a pluggable integration framework to increase the velocity of your software development team.

Wrike's end-to-end solution takes your projects from initial request to tracking work progress and reporting results. With Wrike, you'll be able to create and delegate tasks, track deadlines, visualize your plans on the Gantt chart, and share reports. If needed, you can use advanced features like Custom Workflows, advanced security, restricted data access and more. Wrike is a powerful yet user-friendly solution that helps you achieve your project goals.

Basecamp is a web-based project collaboration tool that allows groups of people to share files, meet deadlines, assign tasks, and centralize feedback.

Phabricator is a collection of open source web applications that help software companies build better software.

OpenProject is an open source software for project management with a wide set of features and plugins and an active international community. It supports project timelines / Gantt charts, issue tracking, wiki, document management, time and cost reporting, code management, Scrum and much more.

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. Almost any web browser should be able to function as a client. Moreover MantisHub is available as commercial hosted solution of MantisBT.

Tuleap is the first fully libre and open source software (GPL licence) for Enterprise Application Lifecycle Management. Tuleap is provided by the Enalean company and the community members.

Opensource task & productivity management tool for startups, engineered based on the concepts of OKR.

Microsoft Office Project gives you robust project management tools with the right blend of usability, power, and flexibility, so you can manage projects more efficiently and effectively. You can stay informed and control project work, schedules, and finances, keep project teams aligned, and be more productive through integration with familiar Microsoft Office system programs, powerful reporting, guided planning, and flexible tools.

Freedcamp is the first completely free alternative to Basecamp. Freedcamp offers an app store where you can install To-Do's, Discussions, Milestones, Time Tracking, and Calendar for free! Project management has never been this sweet.