Compress & Extract Files
This post is been migrated to – INITCRON.org
PeaZip & 7-Zip…Both are open source file and archive manager. Both are cross platform, available as portable and can be used to compress or extract files of various types.
PeaZip
1. a) Packing : 7Z, ARC, BZ2, GZ, PAQ/LPAQ, PEA, QUAD/BALZ, TAR, UPX, ZIP;
b) Unpacking only: ACE, ARJ, CAB, DMG, ISO, LHA, RAR, UDF and many more archive types (79 file extensions supported, see full list)
2. Split/join files
3. AE256 encryption
4. Generate random passwords
5. Secure file deletion
6. Checksum and hash files
And more. Find out more from the official website.
7-Zip Main Features:
1. High compression ratio in new 7z format with LZMA compression
2. Supported formats:
a. Packing / unpacking: 7z, ZIP, GZIP, BZIP2 and TAR
b. Unpacking only: RAR, CAB, ISO, ARJ, LZH, CHM, MSI, WIM, Z, CPIO, RPM, DEB and NSIS
3. For ZIP and GZIP formats, 7-Zip provides a compression ratio that is 2-10 % better than the ratio provided by PKZip and WinZip
4. Strong AES-256 encryption in 7z and ZIP formats
5. Self-extracting capability for 7z format
6. Integration with Windows Shell
7. Powerful File Manager
8. Powerful command line version
9. Plugin for FAR Manager
10. Localizations for 69 languages
Find out more from their official website.
7-zip is smaller compared to Peazip but Peazip is more beautiful looking. If you would like to change how 7-zip looks and you are willing to learn by searching on google, that’s good but if you’re the kind that likes to use after installing without any configuration and you like beauty, go for Peazip. 7-zip would be good on old computers and slow computers.
INITCRON 
I agree with the analisys; I would add:
PeaZip beats 7-Zip in terms of formats supported (basically it takes 7z and other Open Source binaries to do that, like Ark or FileRoller), in terms of scriptability, additional features and GUI; the advantage is even more marked on Linux, where 7-Zip is command line only.
7-Zip on its side beats PeaZip because has more localizations (no surprise, is a more mature project), is smaller and is available, even if only as command line utility, also for all UNIX environments, not only Linux.
We should also not forget that 7-Zip is the source of 7z and POSIX 7z which makes possible to PeaZip, Ark, FileRoller etc to support .7Z archives and a lot of other types.
Thanks for the add pal. I agree with you totally.