Auto extract RAR archives in a monitored folder, with RARZombie
RARZombie is a free utility that will extract / unrar automatically RAR archives as they become available in a folder that the program monitors.
RARZombie can unrar a virtually unlimited number of archives automatically in sequence from folders you select. It can monitor folders for new archives and extract them automatically.
RARZombie requires the Java Environment.
RARZombie works very well, but only with RAR archives — not with ZIP or any other format. For a similar but powerful free utility check ExtractNow