WinRAR представляет собой менеджер архивов для резервного копирования данных и уменьшения их размера
Compress, decompress, share, organize, and manage files in ZIP and ZIPX formats.
Most powerful file compressor nowadays
A must have.
http://wiki.answers.com/Q/What_is_conduit_engine
It's very hard to find out much info about this software. I'd recommend removing it unless you know you need it.