The Aardvark Shell Utils is a collection of three utilities designed to aid the user when working with shell scripts or from the command line. All three accept input on the command line or from standard input, and thus they can be piped with other commands. All commands come with their own man page. Included are realpath, filebase, and fileext.
Outwit is a suite of tools based on the Unix tool design principles allowing the processing of Windows application data with sophisticated data manipulation pipelines. The outwit tools offer access to the Windows clipboard, the registry, the event log, relational databases, document properties, shell links, and the event log.
Shellac allows you to run powerful UNIX tools within Mac OS X Automator workflows. It includes cat, cut, grep, head, paste, sort, tail, uniq, wc, and more. Aqua controls can be used to tweak any setting of the tool. Plain-language descriptions may be read straight from the Automator interface, and tooltips are provided. Tools may be found by their UNIX names. Either explicit text, files, or folders are accepted as input. It is packaged as a self-contained application for easy installation.