Version Latest
KGB Archiver 2.0
Windows / Windows 10 / Windows 11 / Windows 7 / Windows 8
3.7 MB

KGB Archiver allows you to easily compress any form of file. This sophisticated software tool is free and easy to use. There is no better alternative for compressing files into ZIP or KBP format. You can adjust the compression strength by up to ten levels. It all relies on what data you want to compress and which files you want to archive.

KGB Archiver is a free and open-source file compression tool that can achieve extremely high compression ratios. Named after the Soviet-era secret police agency, the KGB, this software seeks to compress files to the greatest amount possible while maintaining quality. Tomasz Pawlak created the utility, which uses the PAQ and AES-256 encryption techniques to compress files.

If you use the highest compression levels, it may eat a significant amount of your system's resources. On the positive side, the compression is much better for the files.

This free program works with the most latest versions of Windows. Some users report that KGB Archiver is difficult to use at first. However, once installed, the program becomes more user-friendly. The software supports AES-256 encryption for compression and archive security. Its compression strength is superior than that of the 7-Zip software.

This program is unique in that it allows you to choose from up to ten different compression settings. Most compression programs do not achieve this, making this one even more effective and strong. What more could you possibly want than something free?

When you secure a compression, you can include password protection in any data compression or archive. Furthermore, files can be decompressed in the same way that they are compressed. This is where you extract the files contained within the compressed KGB or ZIP files.

Main Features

  • Exceptional Compression Ratios: It has remarkable compression ratios, which typically outperform other compression tools on the market. 
  • Multiple Compression techniques: The software supports a variety of compression techniques, including its own KGB format, giving customers more compression options.
  • Encryption: It supports AES-256 encryption for compressed files, protecting data security and confidentiality. 
  • User-Friendly Interface: Despite its sophisticated compression capabilities, it has a simple and intuitive user interface that makes it suitable for users of all skill levels. 
  • Multi-Language Support: The software is available in several languages, increasing its global reach.

Installation and Setup

Installing this file archiver program is simple. The installation package can be downloaded from the official website (which no longer exists) or from reliable software repositories (such as Filesalad). The setup wizard walks users through the installation process, allowing them to change settings like the installation path and shortcuts. Once installed, the software is immediately usable.

How to Use

  • To import the files to be compressed, launch the software and click "Add files" or "Add folder". 
  • Select the compression algorithm and level of compression. 
  • Specify the compressed file's output destination. 
  • Enable encryption and create a password for enhanced security. 
  • Click "Compress" to start the compression process. 
  • Once compressed, the file will be available at the given location.

System Requirements

  • Operating System: Windows XP, Vista, 7, 8, 10, and 11. 
  • Processor: Intel or AMD compatible CPU 
  • RAM: 512 MB or more. 
  • Disk Space: 10MB of free space for installation.


  • Works faster than the 7zip compression tool. 
  • ten configurable compression levels 
  • Multilingual capabilities 
  • Free to use. 
  • AES-256 encryption for increased security. 
  • Password protection / improved data security


  • This application was discontinued. 
  • Only compatible with Windows. 
  • The output archive formats can only be ZIP or KGB. 
  • There is not much help available. 
  • The user interface might be more current and visually appealing. 
  • The setup process is somewhat annoying. 
  • Using high compression levels consumes a lot of system resources.

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