Three main trees, each of which has a main branch:

1. doc — FreeBSD Documentation Project (FDP)
2. ports — the ports collection, where the main branch is also known as latest (an alternative to quarterly)
3. src — FreeBSD base (kernel and world, the operating system), the main branch is for FreeBSD-CURRENT.

One primary mirror, multiple secondary mirrors.

cgit (primary):

• https://cgit.freebsd.org/doc
• https://cgit.freebsd.org/ports
• https://cgit.freebsd.org/src

Codeberg:

• https://codeberg.org/FreeBSD/freebsd-doc
• https://codeberg.org/FreeBSD/freebsd-ports
• https://codeberg.org/FreeBSD/freebsd-src

GitHub:

• https://github.com/freebsd/freebsd-doc
• https://github.com/freebsd/freebsd-ports
• https://github.com/freebsd/freebsd-src

GitLab:

• https://gitlab.com/FreeBSD/freebsd-doc
• https://gitlab.com/FreeBSD/freebsd-ports
• https://gitlab.com/FreeBSD/freebsd-src

Well-known branches at the time of writing (March 2024) include:

• https://cgit.freebsd.org/ports/log/?h=2024Q1 — ports quarterly for the current quarter
• https://cgit.freebsd.org/src/log/?h=releng/14.0 — the highest RELEASE of FreeBSD base
• https://cgit.freebsd.org/src/log/?h=stable/14 — the faster-moving STABLE branch from which 14.0-RELEASE was engineered
• https://cgit.freebsd.org/src/log/?h=releng/13.2 — alternative RELEASE
• https://cgit.freebsd.org/src/log/?h=releng/13.3 — alternative RELEASE
• https://cgit.freebsd.org/src/log/?h=stable/13 — faster-moving.

Items in obscure areas include:

• https://cgit.freebsd.org/doc/tree/access?h=refs/internal/admin — doc committers
• https://cgit.freebsd.org/doc/tree/mentors?h=internal/admin — doc mentees and mentors
• https://cgit.freebsd.org/ports/tree/access?h=refs/internal/admin — ports committers
• https://cgit.freebsd.org/ports/tree/mentors?h=internal/admin — ports mentees and mentors
• https://cgit.freebsd.org/src/tree/access?h=refs/internal/admin — src committers
• https://cgit.freebsd.org/src/tree/mentors?h=internal/admin — src mentees and mentors.

Repos in GitHub include:

• https://github.com/freebsd/drm-kmod/ — DRM drivers ported from Linux to FreeBSD using LinuxKPI
• https://github.com/freebsd/pkg/ — binary package manager
• https://github.com/freebsd/poudriere/ — package production
• https://github.com/FreshPorts/ with freshports — the website part of FreshPorts.

https://freshbsd.org/freebsd — FreshBSD (BSD commit log search) across four trees (doc, ports, poudriere, src)

Developers - FreeBSD Wiki

GitHub - FreeBSD Wiki

Ports/QuarterlyBranch - FreeBSD Wiki

FreeBSD Handbook: Using Git