I use this site:
It tells me everything that is on and will be coming on in the next few hours. Better for if you want to see what movies are on at 8 pm or 9 pm, let's say. You can see them all at once. A few are missing, Disc T&L, FLN, Disney, HBO Com and Cinemax. For the latter two, I go to the HBO website. The site also doesn't tell you what the movie will be on Turner Classic Movies. Use it with Google Translate, of course. You'll laugh at some of the translations. Cute that the Gadget Show is called Widgets.
You can also view the day's listing for the channel, as well as days in advance, if you're looking for a particular show.