Hello Anand

Apart from NIT Trichy, some of the good colleges for Msc CS are

Chennai Mathematical Insitute (highly research oriented)

IITM Kerala

Banaras Hindu University

South Asia University(New Delhi)

Pondicherry University

Assam University

University of Pune

Central University of Rajasthan

Central University of Tamil Nadu

Central University of South Bihar

Central University of Kerala.