About this project

The FreeBSD src tree is the canonical source repository for the FreeBSD operating system. It holds the full source for the kernel (sys/), userland utilities (bin/, sbin/, usr.bin/, usr.sbin/), libraries (lib/), and various third‑party contributions under licenses such as CDDL. The repository also contains build infrastructure (Makefiles, release/, targets/) and documentation pointers to the FreeBSD Handbook for building userland and kernels. Developers can synchronize with project branches, build custom kernels, and create bootable images using the provided make targets. The tree is organized into directories like crypto, kerberos5, include, share, stand, and tests, each serving a specific subsystem. This source base powers everything from high‑traffic web sites to embedded networking and storage devices.