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Take file, compress each block with 1 of 256 algorithms (including no compression) and use algorithm on a per block basis.

Deco is a Un*x script able to extract various archive file formats. Supported archive formats: 7z, ace, ar, arc, arj, bz2, cab, cpio, deb, flac, gz, jar, lha, lzma, lzo, rar, rpm, tar, zip, zoo.

DeuTex is a tool to work with WAD files for Doom, Heretic, Hexen, and Strife. It can be used to extract the lumps from a WAD and save them as individual files. Conversely, it can also build a WAD from separate files. When extracting a lump to a file, it does not just copy the raw data, it converts it to an appropriate format (such as PPM for graphics, Sun audio for samples, etc.). Conversely, when it reads files for inclusion in PWADs, it does the necessary conversions (for example, from PPM to Doom picture format). In addition, DeuTex has functions such as merging WADs, etc. If you're doing any WAD hacking beyond level editing, DeuTex is a must.

Dzip is a program for file compression. It's advantage over more popular compression software is in the size of the program, easily fitting on a floppy disk. It performs just as good as the competition, or slightly better, on average, both in compression ratio and time. Dzip's original purpose was to compress demo recordings of the id Software game Quake much better than any other program, and it still does!

ECM (Error Code Modeler) compresses CD image files (such as BIN, CDI, NRG, CCD, or similar) by stripping unnecessary EDC/ECC data. The space saved depends on the number of sectors with unnecessary EDC/ECC data in them, which will depend on the specific type of CD.

Engrampa is an archive manager for the MATE environment. It is only a front-end (a graphical interface) to archiving programs like tar and zip. The supported file types are: * Tar archives uncompressed (.tar) or compressed with gzip (.tar.gz , .tgz), bzip (.tar.bz , .tbz), bzip2 (.tar.bz2 , .tbz2), compress (.tar.Z , .taz), lzop (.tar.lzo , .tzo) * Zip archives (.zip) * Jar archives (.jar , .ear , .war) * Lha archives (.lzh) * Rar archives (.rar) * Single files compressed with gzip, bzip, bzip2, compress, lzop Engrampa also has a document viewer based on bonobo that lets you view files of any type for which you have a viewer. Former WinZip users may find this program useful. It serves the same purpose.

Fastjar is a version of Sun's `jar' utility, written entirely in C, and therefore quite a bit faster. Fastjar can be up to 100x faster than the stock `jar' program running without a JIT. Currently, the author is working on adding all the features present in the Sun utility. At the moment, implemented features are: * Archive creation * Verbose/quiet output * stdout vs. file output * Manifest file support * Deflation or storage * Changing to directory and adding files (-C) * Archive content listing (-t) * Archive extraction (-x)