bpkg is a utility that tries to simplify the process of trying out new programs from source. For most packages, this can be as simple as "bpkg <url or tarball>". bpkg will download, extract, configure, compile, install, generate a package in your system's native format, and finally integrate that package into your system's packaging system so that you can remove it cleanly. It has auto-detection for Arch Linux, Slackware, Red Hat, Gentoo, and SuSE (though not all packaging back-ends are complete). bpkg is not intended as a replacement for normal packaging utilities.
Spack is a standalone package manager with its own CPIO-based package format but aiming to keep total compatibility with Slackware Linux. Written in POSIX shell as much as it makes sense, it attempts to provide a fairly complete toolkit to build, install, remove, list, retrieve, and arrange your packages. It can be used as an alternative to Slackware's pkgtools, just to independently and properly manage your local software on any distribution, or as the main package manager of the distribution you build yourself.
wget can be used to download a Web site, with all pages referenced by the originating one, but it saves all pages in a directory tree (or single directory). The intention of web-archive-creator is to join the power of wget and the usability of the .war format, which Konqueror is able to browse. The Web ARrchive format is simply a tarred and gzipped file containing the Web files. The web-archive-creator script performs the download with wget and writes an index.html linking to the starting pages/URLs wget fetched.
Nhopkg is a lightweight and powerful package manager system for Unix-like operating systems. Nhopkg can install, remove, update, search, and manage software packages in its own .nho format. Nhopkg aims to be a universal package manager. Because of this, Nhopkg isn't only a package manager, but is also a set of guidelines to pack up software for any machine. Therefore, to check package dependencies, Nhopkg searches for specific files instead of package names.