The netdev mailing list is used for network development (not user questions).

Linux SCSI development mailing list.

The OpenFabrics Alliance is currently developing a unified, open-source software stack for the two major RDMA fabric technologies -- InfiniBand and iWARP (also known as RDMA over Ethernet). OpenFabrics hosts the git repositories for the Linux InfiniBand subsystem.

Linux RAID development.

A mailing list for Linux networking user questions.

Ongoing development of the Reiser filesystems.

The Linux Driver Project is focused on creating and maintaining OpenSource Linux kernel drivers for all types of devices. The developer mailing list is where the new projects are announced and asked for volunteers from, discussions about the project either technical or procedural, and is the general location for anyone wishing to help out with the Linux Driver Project.

Sparse, the semantic parser, provides a compiler frontend capable of parsing most of ANSI C as well as many GCC extensions, and a collection of sample compiler backends, including a static analyzer also called "sparse". Sparse provides a set of annotations designed to convey semantic information about types, such as what address space pointers point to, or what locks a function acquires or releases. Linus Torvalds started writing Sparse in 2003, initially targeting issues such as mixing pointers to user address space and pointers to kernel address space. As of 2006, Josh Triplett now maintains Sparse.

Discussion surrounding the development of the MadWifi and ath5k wireless Ethernet device drivers.

A mailing list for coordinating ath5k development, for a first review of patches, and so on.

A mailing list about the Tux3 versioning filesystem.

Linux C programming language discussion.

Git is the change-tracking tool used by the Linux kernel developers, originally written by Linus Torvalds. This mailing list is where git development happens.

Linux Security Modules (LSM) development mailing list.

Linux input device development.

The original Linux kernel discussion forum, originally a mailing list it eventually became the newsgroup comp.os.linux. Our archive includes postings from 1991, 1992, and 1993. Originally described as:

"Linux_activists is a discussion archive of the mailing list about Linux, a free unix-like kernel for 386-AT computers, coming with full source code. It is meant for hackers/computer science students to use, learn and enjoy."

An OpenBSD mailing list for general user questions and answers. This is the most active OpenBSD mailing list.

Discussion of technical topics for OpenBSD developers and advanced users. This is not a "tech support" forum. OpenBSD developers will often make patches to implement new features and other important changes available for public testing through this list.

This low volume list receives OpenBSD security advisories and pointers to security patches as they become available.

Development of multiprocessor support in OpenBSD.

DragonFly BSD bug reports since July of 2003.

DragonFly BSD patch submissions since July of 2003.

Discussion about DragonFly BSD. We offer a complete archive of this mailing list since its creation in September of 2004.

Discussion about the development of the Haiku kernel.

Technical discussion and general questions about FreeBSD's port of packet filter (pf).

Discussions about the use of FreeBSD-current.

Non technical items related to the FreeBSD community.

Networking and TCP/IP with FreeBSD.

Discussion about FreeBSD filesystems.

Discussion about writing device drivers for FreeBSD.

Discussion about mobile computing with FreeBSD.

FreeBSD project announcements. A moderated list.

Moderated FreeBSD security notifications.

Discussion of general NetBSD technical kernel issues.

OpenMoko kernel development.

This mailing list is dedicated to discussions and ideas pertaining to Tech Source's free-software-friendly graphics products. There is a great need in the Free Software and Open Source communities for graphics cards which have open specifications, and my employer, Tech Source, would like to meet those needs in a technically and economically feasible way.