mkpkg is a small toolkit for automatically building Slackware or OpenLab packages. It should work on most packages that contain a makefile. It follows Slackware standards and is intended to build packages acceptable for linuxpackages.net. After you type the description, it generates a correctly formatted slack-desc file and logs configure options.
whohas is a command line tool that allows you to query several package collections at once. It currently supports Arch Linux (and AUR), Debian, Fedora, Gentoo, Mandriva, openSUSE, Slackware (and linuxpackages.net), Source Mage Linux, Ubuntu, FreeBSD, NetBSD, OpenBSD, Fink, and MacPorts repositories. whohas was designed to help package maintainers find ebuilds, pkgbuilds, and similar package definitions from other distributions to learn from. However, it can also be used by normal users who want to know which distribution provides certain packages, and which version of a given package is in use in each distribution or in each release of a distribution.
Slackselect is a package manager for Slackware that can install, remove, and upgrade packages. It can install/upgrade packages from FTP/HTTP and CD sets. It scans your installed packages, and can show you the packages that can be upgraded (and do it for you). It also finds obsolete packages that aren't in the distribution anymore. It was inspired by the functionality of dselect.
novi is a tool for finding the latest-version RPMs in a tree. It can be used to create Kickstart trees or yum repositories that contain the updated RPMS. In the case of Kickstart, this means machines come to life with the updates already applied. Using novi for a yum repository trims the size of the repodata files, which reduces client download and processing time.
The goal of XPS is to make programming simpler by raising the level of abstraction without loss of performance. It provides true support for meta-programming and domain specific languages, making it possible to design simple programming languages to match the problem at hand. This is the opposite of current practice which seeks to translate the problem domain down into the low level solution domain of current programming languages.
Launch4j is a cross-platform tool for wrapping Java applications distributed as jars in Windows native executables. The executable can be configured to search for a certain JRE version or use a bundled one, and it's possible to set runtime options, like the initial/max heap size. The wrapper also provides better user experience through an application icon, a native pre-JRE splash screen, and a Java download page in case the appropriate JRE cannot be found. The increase in size of the application is small.
The Schily Source Package System (SPS) is a source-based packaging system that is developed for SchilliX (a OpenSolaris-based Unix distribution) but is highly portable and works on many operating systems. It "boots" from a single 10kb shell script and creates all needed binaries from scratch. In contrast to other similar systems, it is modular and reusable. It is based on the Schily Makefilesystem and smake.