WHMExtra has been very useful and has made alot of things easier on alot of companies I know.
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WHM Xtra is a product that actually gets better with each update. I have personally been running it on our server and have seen it on several other servers I was involved with and it just seems to make running very specific task alot easier.
I highly recommend this product - and at such a low cost - it is worth getting it having. You never know when doing complete scan of all accounts on your server for illegal files could come in handy. Like MP3's or bit torrent files.