'GitLab' is a web-based DevOps tool offering a Git-repository manager along with wiki, issue-tracking, and CI/CD pipeline capabilities under an open-source license. Developed by GitLab Inc., it is a collaboration tool for code, issue tracking, and software deployment.

GitLab covers the entire software development cycle, from planning to monitoring, with its integrated CI/CD pipelines streamlining continuous development and deployment processes.

GitLab's unique single-application approach benefits the entire software development lifecycle. It offers functionalities for code and project data management through branching tools, enhancing visibility and efficiency.

Popular in the business world, GitLab provides an all-encompassing suite of tools for software development and deployment, valued for its open-source nature and versatility in managing software development processes.