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The .ZIP file format was designed by Phil Katz of PKWARE and Gary Conway of Infinity Design Concepts. The format was created after Systems Enhancement Associates (SEA) filed a lawsuit against PKWARE claiming that the latter's archiving products, named PKARC, were derivatives of SEA's ARC archiving system. [3]
7-Zip is a free and open-source file archiver, a utility used to place groups of files within compressed containers known as "archives". It is developed by Igor Pavlov and was first released in 1999. [2] 7-Zip has its own archive format called 7z introduced in 2001, [12] but can read and write several others.
7z is a compressed archive file format that supports several different data compression, encryption and pre-processing algorithms. The 7z format initially appeared as implemented by the 7-Zip archiver. The 7-Zip program is publicly available under the terms of the GNU Lesser General Public License.
7z XZ RAR LHA/LZH ACE SIT SITX ARJ KGB DAR ARC CAB ALZ ISO/CD Image ZPAQ Special 7-Zip: Yes Yes Yes [b] Yes [b] Yes Yes [b] No No No No No No No No No No No No No ALZip [c] Yes Yes Yes Yes No Unknown No No No No No No No No No Yes Yes Unknown No Archive Manager: Yes Yes Yes Yes Yes Yes No [d] Yes Unknown Unknown Unknown Yes Unknown ...
7-zip is an interesting one as it claims stupidly high limits, but I know that it is very limited on 32-bit systems for archiving purposes as it uses a very inefficient cataloguing (or whatever) format and can't handle more than ~10^6 files before it runs out of memory (This is before it even starts compressing!).
ZipGenius 6 is capable of opening a variety of formats commonly used with Linux, such as RPM, TAR, TAR.GZ, TGZ, GZ and 7Z. As regards data security, the archive history file is encrypted, the most recently used files list can be enabled (always or per-session) or disabled, and CryptoZip 2.1 gives encryption algorithms to lock user archives.
A self-extracting archive created using 7-Zip. A self-extracting archive (SFX or SEA) is a computer executable program which combines compressed data in an archive file with machine-executable code to extract the information. Running on a compatible operating system, it does not need a suitable extractor in the target computer to extract the data.
The 7-Zip implementation uses several variants of hash chains, binary trees and Patricia trees as the basis for its dictionary search algorithm. In addition to LZMA, the SDK and 7-Zip also implements multiple preprocessing filters intended to improve compression, ranging from simple delta encoding (for images) and BCJ for executable code. It ...