Git (version control system) – allows concurrent edits to the same files and resolves conflicts when pushing changes. Git actually uses a form of optimistic concurrency control to manage changes from multiple developers working on the same repository. Developers don’t lock files when working on them, allowing them to freely commit changes. Only when they attempt to push their changes to a shared repository does Git check for potential conflicts.

Collaborative platforms like Google Docs – allow simultaneous document editing and resolve conflicts at synchronization.