CheriBSD demonstrates how a large existing operating system (FreeBSD, from the FreeBSD foundation) can be adapted to take advantage of CHERI protection.
This work also showed how to perform a software migration, porting a large C codebase incrementally. The operating-system environment also provides a base for running and studying substantial applications.
This makes CheriBSD relevant to products that depend on mature native software and need evidence about the cost and effect of protecting it.