Subversion

Subversion (or SVN) is an older SCM that's been in play since early in 2004. It's one of the most popular non-distributed SCMs still in use today. Like most SCMs before it, SVN stores a complete local copy of the code and content for each checked-out branch that it's tracking, and uploads those (perhaps in their entirety) during the commit process. It's also a centralized rather than a distributed system, which means that all branching and merging has to happen with respect to the master copy of the code base, wherever it might live.

The various under-the-hood differences and popularity of Git notwithstanding, SVN is a perfectly viable option for managing source code across a team, even if it's less efficient or less popular than Git. It fully supports the typical get-edit-commit work cycle, just not with the same degree of flexibility as Git provides.