Neon is basically this same idea: postgres on a copy-on-write file system. These aren't really "branches" though, they're hard forks. You can't merge them back

Neon is basically this same idea: postgres on a copy-on-write file system. These aren't really "branches" though, they're hard forks. You can't merge them back after making changes. Dolt is still the only SQL database with branch and merge.