Amazing file archiver and data compression program for Windows PC

KGB Archiver

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KGB Archiver

  -  3.7 MB  -  Open Source
  • Latest Version

    KGB Archiver 2.0 beta 2 LATEST

  • Review by

    Michael Reynolds

  • Operating System

    Windows (All Versions)

  • User Rating

    Click to vote
  • Author / Product

    Tomasz Pawlak / External Link

  • Filename


  • MD5 Checksum


KGB Archiver allows you to easily compress all types of files. This powerful software tool is completely free and simple to use. If you want to compress files into ZIP or KBP format, then there is no better option out there. You can customize the strength of the compression up to 10 levels. It all depends on the data you want to compress and the files you want to archive.

KGB Archiver is a free and open-source file compression tool designed to achieve remarkably high compression ratios. Named after the Soviet-era secret police agency, the KGB, this software aims to compress files to the maximum extent without compromising on quality. Developed by Tomasz Pawlak, the tool primarily utilizes the PAQ and AES-256 encryption algorithms to compress files.

If you choose the strongest compression levels, it may consume a lot of your system’s resources. On the upside, the compression is a lot better for the files.

This free tool is compatible with most recent versions of Windows. Some users claim that executing KGB Archiver is difficult initially. But after you install the program, it becomes easier to use thereafter. The software provides AES-256 encryption for compression and archive security. Its compression strength is even better than that of the 7-Zip software.

What is unique about this program is that it lets you select from up to 10 compression levels. Most compression tools don’t do this, which makes this one even better and more powerful. Since it is free, what more can you ask for?

When you secure a compression, you can add password protection to any data compression or archive. In addition, you can decompress files just as easily as you can compress them. This is where you extract the files which are inside the compressed KGB or ZIP files.

Main Features
  • Exceptional Compression Ratios: It boasts impressive compression ratios, often surpassing other compression tools in the market.
  • Multiple Compression Algorithms: The software supports various compression algorithms, including its proprietary KGB format, providing users with flexibility in compression options.
  • Encryption: It offers AES-256 encryption to secure compressed files, ensuring data privacy and confidentiality.
  • User-Friendly Interface: Despite its advanced compression capabilities, it features a simple and intuitive user interface, making it accessible to users of all skill levels.
  • Multi-Language Support: The software is available in multiple languages, enhancing its global accessibility.
Installation and Setup

Installing this file archiver tool is a straightforward process. Users can download the installation package from the official website (there is no more) or reputable software repositories (like FileHorse). The setup wizard guides users through the installation steps, allowing them to customize preferences such as installation directory and shortcuts. Once installed, the software is ready for immediate use.

How to Use
  • Launch the software and select "Add files" or "Add folder" to import the files you wish to compress.
  • Choose the compression algorithm and level of compression.
  • Specify the output destination for the compressed file.
  • Optionally, enable encryption and set a password for added security.
  • Click "Compress" to initiate the compression process.
  • Once compression is complete, the compressed file will be available at the specified location.

Is KGB Archiver compatible with all file formats?
It supports a wide range of file formats, including popular formats like ZIP, RAR, and 7z, ensuring compatibility with most files.

Can I decompress files compressed with KGB Archiver using other software?
Yes, it provides options to decompress files using compatible software, ensuring interoperability with other compression tools.

What is the maximum compression ratio achievable with KGB Archiver?
While compression ratios vary depending on the file type and content, the tool is capable of achieving compression ratios as high as 1:1000.

Is KGB Archiver suitable for compressing large files?
Yes, the program is optimized for compressing large files and is capable of handling files of considerable size efficiently.

Does KGB Archiver for PC support batch compression?
Yes, it offers batch compression functionality, allowing users to compress multiple files simultaneously for improved productivity.


WinRAR: A popular compression tool known for its robust feature set and compatibility with various file formats.

7-Zip: A free and open-source compression utility renowned for its high compression ratios and extensive format support.

WinZip: A user-friendly compression tool with a focus on simplicity and ease of use, ideal for novice users.

PeaZip: A versatile compression software offering advanced features such as encryption, file splitting, and archive conversion.

Bandizip: A lightweight compression tool featuring a modern interface and support for numerous archive formats.

System Requirements
  • Operating System: Windows XP/Vista/7/8/10/11
  • Processor: Intel or AMD compatible CPU
  • RAM: 512 MB or higher
  • Disk Space: 10 MB of free space for installation
  • Works faster than 7zip compression tool
  • 10 customizable compression levels
  • Multilingual capabilities
  • Free to use
  • AES-256 encryption for enhanced security
  • Password protection / Increased data security
  • This application has been discontinued
  • Windows compatibility only
  • Output archive formats can only be either ZIP or KGB
  • Not much support available
  • User interface could be more modern and visually appealing
  • The set-up process is rather annoying
  • Consumes a lot of system resources when you use high compression levels

  • KGB Archiver 2.0 beta 2 Screenshots

    The images below have been resized. Click on them to view the screenshots in full size.

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