Top Alternatives to CodePlex

GitHub is a web-based Git or version control service.

Redmine is a flexible project management web application.

Bitbucket is a web-based hosting service for source code and development projects.

GitLab is a web-based Git repository manager with wiki and issue tracking features.

SourceForge is a Web-based service that offers software developers a centralized online location to control and manage free and open-source software projects

Team Clerk is project and task management software.

Jira is a proprietary issue tracking product, developed by Atlassian.

Yodiz is a simple but comprehensive agile tool with visual boards for Sprints, Releases, Backlog, Epics and Issue management.

Launchpad is a web application and website that allows users to develop and maintain software, particularly open-source software.

Gogs is a painless self-hosted Git service. Gogs runs anywhere Go can compile for Windows, Mac, Linux, ARM, etc.

Assembla is the leading provider for SVN and Perforce hosting and has task management features built into it's platform.

Codebase is a code hosting platform with project management tools built for professional development teams.

GitBucket is a Git web platform powered by Scala.

Beanstalk is the complete code hosting workflow teams or individuals use to write, review and deploy their code.

Unfuddle brings together the best of bug and issue tracking, git and Subversion hosting and collaboration tools for agile software development teams.

SprintGround is a free task management for small software development teams and freelancers.