GitLab is a web-based platform that helps individuals and teams manage, store, and collaborate on software code. It offers tools for version control, issue tracking, and continuous integration, making it easier to develop, review, and deploy software projects. GitLab is widely used by developers to organize code changes, track progress, and work together efficiently, whether on open-source or private projects. Its user-friendly interface and powerful features make it a central hub for modern software development.