LKMB is a Perl module that can be used to create a kernel module package, that can later be used to create a package that can be bootstrapped on any GNU machine. It is incomplete, but still partially usable. LKMB is part of the Comprehensive Linux Archive Network (CLAN) meta-project.
SMATCH is a neat program designed to locate programming errors in any open source software project. Right now it is actively used to screen out errors inside the Linux kernel. There are two main parts to Smatch. The first is a patch to the gcc sources to screen out a lot of useful information. The second part is a collection of Perl scripts and libraries to analyze the information and report the findings.
install_latest_kernel automates the process of fetching, patching, configuring, building, and installing Linux kernels and updating bootloaders. It is designed for people that often install the latest kernel and get a little bit bored by the standard routine. It is not suitable for newbies and requires a working setup, a kernel configuration file, and the ability to read scripts and apply patches.