The EGG file format is a compressed archive file format that supports for Unicode

Unicode

Unicode is a computing industry standard for the consistent encoding, representation and handling of text expressed in most of the world's writing systems...

 and intelligent compression algorithms. EGG format is created by ESTsoft

ESTsoft

Founded in 1992, ESTsoft is a South Korean application software development company. Its software ranges from desktop to business software for enterprises.-Products:...

 and was first applied in their file compression software ALZip

ALZip

ALZip is an archive and compression utility from ESTsoft for Microsoft Windows.- History :Originally ALZip was developed in 1999 as an internal application at the South Korean software company ESTsoft in response to employee frustration with using the English interface in WinZip.The Korean...

.

The filename extension

Filename extension

A filename extension is a suffix to the name of a computer file applied to indicate the encoding of its contents or usage....

 used by EGG is .egg. If an EGG archive is split into multiple smaller files, the files uses the extensions by placing .volX (X for sequence number starting from 1) ahead of its original extension, i.e. .vol1.egg, .vol2.egg, .vol3.egg and so on.

Features

The EGG format supports the following features:

• Store file names in Unicode
  Unicode
  Unicode is a computing industry standard for the consistent encoding, representation and handling of text expressed in most of the world's writing systems...
  
  
• AES
  Advanced Encryption Standard
  Advanced Encryption Standard is a specification for the encryption of electronic data. It has been adopted by the U.S. government and is now used worldwide. It supersedes DES...
  
  -256 encryption
  Encryption
  In cryptography, encryption is the process of transforming information using an algorithm to make it unreadable to anyone except those possessing special knowledge, usually referred to as a key. The result of the process is encrypted information...
  
  
• Support for solid compression
  Solid compression
  In computing, solid compression refers to a method for data compression of multiple files, wherein all the compressed files are concatenated and treated as a single data block. Such an archive is called a solid archive. It is used natively in the 7z and RAR formats, as well as indirectly in...
  
   option to decide the best compression method, that is, analyzes the files to be compressed then chooses whether to compress faster or to prioritize on compression ratio
• Unlimited number of splitting into smaller pieces of archives

Software

ALZip

ALZip

ALZip is an archive and compression utility from ESTsoft for Microsoft Windows.- History :Originally ALZip was developed in 1999 as an internal application at the South Korean software company ESTsoft in response to employee frustration with using the English interface in WinZip.The Korean...

 software can compress

Compress

Compress is a UNIX compression program based on the LZC compression method, which is an LZW implementation using variable size pointers as in LZ78.- Description of program :Files compressed by compress are typically given the extension .Z...

 and extract

Extract

An extract is a substance made by extracting a part of a raw material, often by using a solvent such as ethanol or water. Extracts may be sold as tinctures or in powder form....

 the EGG file format.

Bandizip

Bandizip

Bandizip is a free file archiver and compressor for Microsoft Windows, developed by Bandisoft. Key features for Bandizip include the ability to preview archives from the right click context menu, selectively compress files based on high compressibility versus poor compressibility, and create...

 software can extract

Extract

An extract is a substance made by extracting a part of a raw material, often by using a solvent such as ethanol or water. Extracts may be sold as tinctures or in powder form....

the EGG file format.