The Yocto project provides excellent tooling for building Embedded Linux distributions; however many users have found a need to extended the project with extra tooling to achieve specific goals related to the build environment setup, additional layer management, and build configuration management. Many of these tools have been developed by various parties over the years, and Joshua will attempt to impartially describe some of the options available to you, what they do, and why you many want to use them in your setup. Tools covered will include: combo-layer, git submodules, git subtrees, crops, pyrex, whisk, kas, and others TBD.