It seems to be a search engine optismised for linux, windows, bsd and mac. For example, if you search for “word processor”, it will return results for word processors available to Linux.  This is not new, but seems like people still doesn’t know the existence of this service by google…

Well, if you want to search some specific operating systems based thingy, you can try to use above links

The search result is not the same like normal google search engine..its cool..!