code base
codebase

They also seem to share a common code base or very close development based on the new features developed for both file systems.

Over the last 2 years, large parts of the original code base have been rewritten.

It has become common practice to maintain code bases in version control systems.

So it'll get fixed as part of them fixing their major code base.

I mean, that sounds like what they should be really doing with their code base.

It's a common code base with three skins for the different brands.

The code base ended up being much simpler with a cleaner design.

They haven't kept up, in fact, with the code base.

All later versions of the product are built off this code base.

Projects group similar components into a code base used to build software.