System Requirements:

Operating System: Windows XP / Vista / Windows 7 / Windows 8 / 8.1 / 10

Launch/delete:

Launch: open file 7zfm. You can run it without Administrator rights.
Delete: delete the shared folder with the program.

Functions and features:

7-Zip compresses files using the LZMA algorithm, which is much more advanced than the WinRAR archiver algorithm. The LZMA data compression algorithm supports multi- and hyper-threading technologies, which also gives the program a plus on platforms with powerful processors in comparison with competitors.
In 7-Zip, it is possible to create archives that are password protected (it will take 40 to 100 years to decrypt a password of 17 characters), encrypt file names and, of course, create self-extracting SFX archives. The encryption uses 256-bit cryptographic algorithm AES, which is one of the best encryption algorithms currently.
First of all, this archiver is valuable with its own 7z format. It is believed that this format has the highest compression ratio and is excellent for archiving large amounts of information (for example, especially large programs or games). The following formats are also supported: ZIP, CAB, RAR, ARJ, GZIP, LZH, CHM, BZIP2, TAR, CPIO, RPM and DEB. It is worth paying attention to frequent situations in which the compression ratio of ZIP and GZIP formats in this program is an order of magnitude higher than that of competitors.
7-Zip is completely free, and since this is an infrequent phenomenon among programs of this kind, this fact is another good argument in its favor.
Some features:
Archiving/unzipping: 7z, XZ, BZIP2, GZIP, TAR, ZIP and WIM
Only unzipping: 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, the 7-Zip archiver offers compression that is 2-10% better than the compression provided by PKZip and WinZip archivers
Strong encryption in 7z and ZIP formats
Self-extracting capability for 7z format
Powerful File Manager
Powerful command line version
Plugin for FAR Manager.
Changes:
16.00 2016-05-10
7-Zip now can extract multivolume ZIP archives (z01, z02, ... , zip).
Some bugs were fixed.

About Portable:

The portable version of the program is made in VirtualBox 4.3.6.91406 Portable with clean Windows 7x32 on VMware ThinApp 5.2.0 Build 3231342 Portable by KpoJIuK
- using a standard Windows notepad. Removed parts not needed in the portable version.
It may not work correctly on Windows 10 x64 with AMD (optional).
Checking for Virustotal: https://www.virustotal.com/ru/file/56b7089de267a9fb6be2eee2d6372bb8835f3c563dacbf07cc3f17acc18d1c2e/analysis/1463032417/, there are no complaints from used antiviruses, there are signals from unused/little-used scanners with different formulations.
Please leave messages in case of flaws, and so on, suggestions for improving the portable version - in the comments, your thoughts will be taken into account.