Powerful Archiver : KGB Archiver 2 beta.

KGB Archiver is a free, open source and cross-platform file archiver and data compression utility developed by Tomasz Pawlak based on the PAQ6 compression Algorithm. It achieves a very high compression ratio at the cost of time and memory consumption.

KGB Archiver is the compression tool with an unbelievably high compression rate. Unfortunately, in spite of its powerful compression rate, it has high hardware requirements (I recommend processor with 1,5GHz clock and 256MB of RAM as an essential minimum). One of the advantages of KGB Archiver is also AES-256 encryption which is used to encrypt the archives. This is one of the strongest encryptions known for man.

Click here to download KGB Archiver 2 Beta.