Git: A distributed version control system known for its speed, flexibility, and decentralized nature. Git is widely used in open-source projects and by many companies.

Subversion (SVN): A centralized version control system that tracks changes to files and directories over time. SVN is known for its simplicity and ease of use, especially in environments where a centralized repository is preferred.

Mercurial: Another distributed version control system similar to Git, offering scalability and performance. It is used in various industries, including software development and video game development.

Perforce (Helix Core): A centralized version control system that supports large-scale development environments with a focus on performance and scalability. It is often used in industries such as game development and hardware design.

Team Foundation Version Control (TFVC): Developed by Microsoft, TFVC is a centralized version control system integrated with Microsoft's Team Foundation Server (TFS) and Azure DevOps Services.

IBM Rational ClearCase: A software configuration management system that provides version control, workspace management, and build auditing. It is used primarily in enterprise-level software development.

Bitbucket: While primarily a hosting service for Git repositories, Bitbucket also offers support for Mercurial repositories. It provides collaboration features such as pull requests, code reviews, and continuous integration.

SourceGear Vault: A version control tool designed for Windows developers, offering features like atomic commits, branching, and merging, similar to SVN but with a more modern architecture.

Bazaar: A decentralized version control system that emphasizes ease of use and flexibility. It is suitable for small to medium-sized projects where developers may not always have network access.

AWS CodeCommit: A managed source control service provided by Amazon Web Services (AWS) that hosts Git repositories. It integrates with other AWS services for scalable and secure version control.