Did you try a search? Its been discussed a lot previously. Just click on "Search" and type in the appropriate words, then click on "Go".
There are a lot of such devices. Its sort of like surge protectors. Which would be a good feature to look for in whatever device you get.
You also want to make sure you get one with a high enough power rating. For most purposes, 200 watts should be adequate, depending on your peripherals. Two or more outlets are a great feature as well though you can get adaptors to provide more outlets that's just one more thing to keep track of.