Searching for Trains on a certain route using the official Indian Railways site is a pain not only because it’s slow and ugly, but also because the availability of seats on that train is a further 2 or 3 clicks away.
Cleartrip has launched the Cleartrip Calendar to make this search a little easier by combining the search and availability steps. You just need to specify the source and destination stations, the class and the range of dates you plan to travel.
You get this table of results displaying all the trains on the route as well as which trains are full and which still have seats available.
In case you find seats available on the train of your choice, Cleartrip even allows you to book the ticket right from the site itself. Thanks Alootechie