Erail has new version which has rich user interface.
Basically, erail.in is the PNR SEARCH, Seat Availability checking website. It is very fast. It has many options, Seat availability, PNR search, Refund Calculation, Seat Map, Indian Railways Fare, Suburb Fare, Refund Rules and Refund Calculation.
You need Mozilla and chrome extension to access this site. If you are accessing this website first time. It will ask you to install the plugin and extension.
It has mobile app also which is lightweight and it is reliable too.
Android : https://play.google.com/store/apps/details?id=in.erail.m