GitLab is a web-based Git repository manager with wiki and issue tracking features. Developed by GitLab Inc.
License: Open Source
GitLab is a comprehensive DevOps platform with extensive CI/CD capabilities and integrated version control, making it suitable for large teams and complex projects. Project Pier, on the other hand, is a lightweight project management tool ideal for small teams and simpler projects, offering an easy-to-use interface but with limited features.