eFob Portable Zip Compression / Decompression Software

On this page I am listing the very best portable zip compression / decompression software for usb thumb drives, SSD Flash Drives, iPads, and mobile devices.
The portable software I'm listing here is either portable zip compression / decompression software I use myself or the best available without charge or open source portable zip compression / decompression software.
The two indispensible portable zippers I use are 7Zip and Universal Extractor. 7Zip works great for me on a day-to-day basis for all my decompression / compression (and I am a heavy user). Universal Extractor is great when I want to extract files from an install archive, for example to run some software portably instead of installing it, and again, Universal Extractor has done everything I need.
7-Zip Compression / Decompression Software

7-Zip works in Windows 7 / Vista / XP / 2008 / 2003 / 2000 / NT / ME / 98. There is a port of the command line version to Linux/Unix.
7-Zip offers a High compression ratio in 7z format with LZMA and LZMA2 compression.
7-Zip Supported formats: Packing / unpacking: 7z, XZ, BZIP2, GZIP, TAR, ZIP and WIM - Unpacking only: ARJ, CAB, CHM, CPIO, CramFS, DEB, DMG, FAT, HFS, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, RAR, RPM, SquashFS, UDF, VHD, WIM, XAR and Z.
For ZIP and GZIP formats, 7-Zip provides a compression ratio that is 2-10 % better than the ratio provided by PKZip and WinZip.
7-Zip has Strong AES-256 encryption in 7z and ZIP formats. Self-extracting capability for 7z format. Integration with Windows Shell. Powerful File Manager. Powerful command line version. Plugin for FAR Manager. Localizations for 79 languages. 7-Zip is open source software.
7-Zip Compression / Decompression Software Homepage
ArcConvert Compression / Decompression Software

ArcConvert includes the EXE from the archiver. ArcConvert has automatic password detection from archive. ArcConvert has Multilanguage support: Dutch, English, German, Italian, Japanese, Spain, Taiwan, Greek, Swedish, Hungarian.
ArcConvert Compression / Decompression Software Homepage
Universal Extractor Decompression Software

Universal Extractor allows you to extract files from virtually any type of archive, regardless of source, file format, or compression method.
Universal Extractor is a mature and very capable unarchiving utility. Note: Universal Extractor does not replace utilities such as 7-Zip or WinRar as it does not create archives but if you ever want to extract from an archive this is a great portable tool.
Universal Extractor Decompression Software Homepage
PeaZip Compression / Decompression Software

PeaZip Create: 7Z, ARC, BZ2, GZ, *PAQ, PEA, QUAD/BALZ, TAR, UPX, WIM, XZ, ZIP.
PeaZip Extract 130+ archive types: ACE, ARJ, CAB, DMG, ISO, LHA, RAR, UDF, ZIPX and more.
Features of PeaZip includes extract, create and convert multiple archives at once, create self-extracting archives, split/join files, strong encryption with two factor authentication, encrypted password manager, secure deletion, find duplicate files, calculate hashes, export job definition as script.
PeaZip Features: Create 7Z, ARC, BZ2, GZ, PAQ, PEA, QUAD/BALZ, TAR, UPX, WIM, ZIP. Extract over 130 archive types, including ACE, ISO, RAR, UDF, ZIPX. Archive management: extract, create and convert multiple archives at once, create sfx archives, split and merge files, save job definition as script. File management: advanced search, navigation and bookmarking features, find duplicate files, calculate checksums and hashes. Security: strong encryption with two factor authentication, encrypted password manager, secure deletion. Available both for Windows and Linux in portable and installable version.
PeaZip Compression / Decompression Software Homepage