BitKeeper is a proprietary software tool for distributed revision control (configuration management, SCM, etc.) of computer source code. BitKeeper is produced by BitMover Inc., a privately held company based in Campbell, California and owned by CEO Larry McVoy, who had previously designed TeamWare.BitKeeper uses history files that are based on delta tables and interleaved deltas from SCCS but uses an incompatible magic number (0x01 0x48 instead of 0x01 0x68) at the beginning.