Where to see everything that's on the shelf atm?

So I've realized my pull list is down to one book. I'm looking to expand it, but I don't really have the time to go down to the LCS and window shop. Are there any websites that list currently ongoing series? Obviously counting all the tiny publishers, no one's got everything, but if I could at least see the Big Two and Lesser Two (Image & DH), that'd be enough for me.