piler is an email archiving application with all the features required for an average company. The most prominent features are full text searching, deduplication, compression, encryption, digital fingerprinting, policy rules, access control, a built-in SMTP server, and Active Directory/openldap support.
Apptools is a collection of programs for accessing Applix 1616/OS disk images. It is similar to 'mtools' and 'cpmtools' for MS-DOS and CP/M disks. The tools have been tested on Applix 1616/OS floppy disk images, but should work on hard disk images. The tools are limited to reading and only work with raw disk images. The collection includes programs for listing, copying, displaying, and reporting, and all tools allow recursive and wildcard operations.
lxz aims to create xz-compatible compressed files, utilizing multiple threads and liblzma. It was forked from lbzip2-0.23 and inherited the same internal structure. It supports compression only (basic features), and will lose its raison d'etre as soon as xz itself gets multithreading support.
BZip2/OSS-QM is the OSS-QM project's branch of bzip2, which contains a lot of fixes not yet in the original upstream. The primary goal is to provide QM'ed/fixed versions of upstream releases, so they can be built and used without additional patches, especially in sysrooted crosscompiling environments.