GitLab is a web-based Git repository manager that allows teams to manage source code, automate CI/CD pipelines, and collaborate on code with merge requests. It provides a platform for continuous integration and deployment, along with issue tracking, code review, and repository management features.
Gitea is a self-hosted git service, with a similar interface and functionality to GitHub or GitLab. It is lightweight and optimized to be fast, easy to deploy, and efficient on resources.