Yes , it is possible to Compress 1 GB file to 10 MB using KGB Archiver . KGB Archiver , an open source compression tool like 7zip and UHARC with an unbelievably high compression rate .It uses AES-256 encryption (one of the strongest encryption known for man) to encrypt archives . The disappointing thing with KGB Archiver is due to its high compression rate its minimum hardware requirement is high ( recommend processor with 1,5GHz clock and 256MB of RAM ) and compression and decompression process is time consuming.
The latest version KGB archiver 2 BETA 2 has got lot of new features like Multilanguage support (Arabic, German, Greek, Japanese, Polish, Portuguese, Serbian, Spanish, Ukrainian) , Explorer shell extension , 8% faster compression/decompression etc .
download kgb archiver from bellow
http://download.cnet.com/KGB-Archiver/3000-2250_4-10814647.html?tag=mncol;2
The latest version KGB archiver 2 BETA 2 has got lot of new features like Multilanguage support (Arabic, German, Greek, Japanese, Polish, Portuguese, Serbian, Spanish, Ukrainian) , Explorer shell extension , 8% faster compression/decompression etc .
download kgb archiver from bellow
http://download.cnet.com/KGB-Archiver/3000-2250_4-10814647.html?tag=mncol;2