The last company I worked at had one. How bad of a sign this is depends on when it was developed and why. Theirs was developed in the early days of VCS, when no

The last company I worked at had one. How bad of a sign this is depends on when it was developed and why. Theirs was developed in the early days of VCS, when none of the off-the-shelf systems had the feature set that they needed. Probably they kept using it longer than they should have, I suppose out of inertia, but they were in the process of moving away when I left. In that situation, it isn't too bad of a sign. On the other hand, if you ever find a company that wrote their own VCS 3 years ago that has half the features of Git, then run far and run fast!