Coordinated multi-repository super-projects for Git
Gitslave is a script for coordinated version control of large projects combining code from multiple independent repositories using Git. More flexible than traditional git submodules, gitslave provides a simple wrapper around command-line git that manages a directory tree with multiple subsidiary ("slave") git repositories in sub-directories of a "master" git repository. Any git command run from the "gits" wrapper will be performed in all the git repositories; for example gits checkout -b newbranch will create the new branch in all repositories.
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The DevTools project is an open-source (BSD-licensed) set of development tools, including a set of shared gmake-style utility makefiles, the TLM version-control wrapper, and various other little utility C++ programs and Perl and Python scripts.