Top Alternatives to GitLab

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

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

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

Trac is an open source, Web-based project management and bug tracking system.

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

Project Hosting on Google Code is open source hosting service.

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

Buddy Platform is a lightweight, fast and flexible platform for collecting and processing Internet of Things (IoT) data.

Phabricator is a suite of web-based software development collaboration tools.

Kallithea is a free software source code management system supporting two leading version control systems, Mercurial and Git.

GitBucket is a Git web platform powered by Scala.

RhodeCode is an open source self-hosted platform for behind-the-firewall source code management.

Tuleap Open ALM is a libre & open source platform for agile management and software development.

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

Gitblit is an open-source, pure Java stack for managing, viewing, and serving Git repositories.

Gitweb is a Git web interface. It is written in Perl and can be used as a CGI script, or as a mod_perl legacy script.

Bountysource is a website for open source bounties.

GitPrep is a portable GitHub system.