KGB Archiver 2 (KGB Archiver 2.0 beta 2) is a discontinued, open-source file compression utility developed by Tomasz Pawlak. It is primarily known for its extreme "super compression" ratios, which often surpass modern standards like 7-Zip, though it requires significant CPU and memory resources to achieve these results.
It was written in Visual C++ and is available as a GUI for Windows and a command-line tool for Unix-like systems. kgb archiver 2 rus skachat
KGB Archiver offers ten compression levels, ranging from "very weak" to "maximum". KGB Archiver 2 (KGB Archiver 2
This architecture consists of multiple independent submodels that predict the next bit based on different contexts. These predictions are combined by a "mixer" using weighted summation to compute final probabilities. KGB Archiver offers ten compression levels, ranging from
While it can reduce file sizes drastically—for example, compressing a 4.0MB photo down to 1.3MB—the process is "painstakingly slow" compared to competitors like 7-Zip.
High compression levels lead to intense CPU and RAM usage, often triggering system warnings during the process.