Dear,

Here are some top colleges for Computer Science Engg in Tamil Nadu-

Central Government

1. IIT Madras (All India Rank 1)
2. NIT trichy (All India Rank 10)

Government

1. Anna University Chennai - (CEG ,MIT & ACT) (All India Rank 7 or 8)
2. Government College of Technology(GCT), Coimbatore (All India Rank 93)
3. Government College o Engineering, Salem
4. A.C. Tech Karaikudi
5. Government College of Engineering, Thirunelveli

Government Aided

1. PSG college of Technology, Coimbatore (All India Rank 29)
2. Thyagaraja college of Engineering , Madurai (All India Rank 39)
3. Coimbatore Institute Of Technology, Coimbatore (All India Rank 62)

Private Colleges

1. SSN, Chennai (All India Rank 36)
2. Kumaraguru college of technology(KCT), Coimbatore (All India Rank 77)
3. Sri Venketeshwara College of Engineering (SVCE), Chennai

Deemed Universities

1. VIT , Vellore (All India Rank 13)
2. Amrita Vishwa Vidyapeetham, Coimbatore (All India Rank 15)
3. SASTRA , Tanjavur (All India Rank 33)
4. SRM Chennai (All India Rank 36)
5. Sathyabama University (All India Rank 37)
6. Karunya University (All India Rank 72)

You can find more information about these colleges on- https://engineering.careers360.com/colleges/list-of-computer-science-engineering-colleges-in-tamil-nadu

Hope this helps!