Igor Pavlov Software

7-Zip 

7-Zip is a file archiver with the highest compression ratio. The program supports 7z, ZIP, RAR, CAB, ARJ, CPIO, RPM, DEB, GZIP, BZIP2, Z and TAR formats. Compression ratio in the new 7z format is 30-50% better than ratio in ZIP format.

7-max 

7-max is a program for accelerating your Windows system. 7-max increases the performance of some applications up to 10-20%.