Step 1: The question asks for the name of the online platform created under RNTCP to keep a record of TB patients nationwide.
Step 2: That platform is NIKSHAY, a web-based application whose name is built from Hindi words signifying the elimination of tuberculosis.
Step 3: It was set up jointly by the Central TB Division and the National Informatics Centre and rolled out in 2012 to allow case notification, follow-up and programme monitoring online.
Step 4: The remaining choices are distractors that do not correspond to the actual TB surveillance software, confirming NIKSHAY as the answer.
\[\boxed{\text{NIKSHAY}}\]