Yahoo Group Message Archiver (YGMA) is a Java (jre/sdk 5.0) library and tools for extracting messages from a Yahoo! Group and processing them into maildir format. It supports login to non-public groups.
NuFX or "ShrinkIt" archives are the de-facto standard in the Apple II (and A2 emulator) world. NufxLib is a full-featured library of functions that manipulate NuFX archives (.SHK, .SDK, .BXY). NuLib2 is a command-line utility built on top of NufxLib.
THIS PROJECT HAS MOVED TO GITHUB
https://github.com/fadden/nulib2
Originally developed as a GUI replacement for the JAR utility included with the Java SDK, this program is expanding to become a cross platform archive utility with the ability to create fully cross platform installation programs.