BA – Scifer Archive (.ba), Scifer External Archive Type
big – Special file compression format used by Electronic Arts for compressing the data for many of EA’s games
BIK (.bik) – Bink Video file. A video compression system developed by RAD Game Tools
BKF (.bkf) – Microsoft backup created by NTBACKUP.EXE
bzip2 – (.bz2)
bmp – (paint)
bld – Skyscraper Simulator Building
c4 – JEDMICS image files, a DOD system
cab – Microsoft Cabinet
cals – JEDMICS image files, a DOD system
cpt/sea – Compact Pro (Macintosh)
DAA – Closed-format, Windows-only compressed disk image
deb – Debian Linux install package
DMG – an Apple compressed/encrypted format
DDZ – a file which can only be used by the “daydreamer engine” created by “fever-dreamer”, a program similar to RAGS, it’s mainly used to make somewhat short games.
DPE – Package of AVE documents made with Aquafadas digital publishing tools.
EEA – An encrypted CAB, ostensibly for protecting email attachments
.egg – Alzip Egg Edition compressed file
EGT (.egt) – EGT Universal Document also used to create compressed cabinet files replaces .ecab
ECAB (.ECAB, .ezip) – EGT Compressed Folder used in advanced systems to compress entire system folders, replaced by EGT Universal Document
ESS (.ess) – EGT SmartSense File, detects files compressed using the EGT compression system.
GHO (.gho, .ghs) – Norton Ghost
gzip (.gz) – Compressed file
IPG (.ipg) – Format in which Apple Inc. packages their iPod games. can be extracted through Winrar
jar – ZIP file with manifest for use with Java applications.
LBR – Library file
LQR – LBR Library file compressed by the SQ program.
LHA (.lzh) – Lempel, Ziv, Huffman
lzip (.lz) – Compressed file
MBRWizard archive (.mbw)
MPQ Archives (.mpq) – Used by Blizzard games
NTH (.nth) – Nokia Theme Used by Nokia Series 40 Cellphones
PAK – Enhanced type of .ARC archive
Parchive – (.par, .par2)
Quake 3 archive (.pk3) – (See note on Doom³)
Doom³ archive (.pk4) – (Opens similarly to a zip archive.)
RAR Rar Archive (.rar) – for multiple file archive (rar to .r01-.r99 to s01 and so on)
RAG / RAGS game file, a game playable in the RAGS game-engine, a free program which both allows people to create games, and play games, games created have the file format “RAG game file”
RPM – Red Hat package/installer for Fedora, RHEL, and similar systems
SEN Scifer Archive (.sen) – Scifer Internal Archive Type
sit/sitx – StuffIt (Macintosh)
SKB – Google Sketchup Backup File
tar – group of files, packaged as one file
.tar.gz, .tgz – gzipped tar file
TB (.tb) – Tabbery Virtual Desktop Tab file
TIB (.tib) – Acronis True Image backup
uha – Ultra High Archive Compression
VIV – Archive format used to compress data for several video games, including Need For Speed: High Stakes.
VOL – unknown archive
VSA – Altiris Virtual Software Archive
WAX – Wavexpress – A ZIP alternative optimized for packages containing video, allowing multiple packaged files to be all-or-none delivered with near-instantaneous unpacking via NTFS file system manipulation.