The following are some of the GATE coaching centers at Trichy -
1. Brilliant Tutorials Pvt. Ltd., D-110, 9th Cross East, Thillai Nagar, Trichy
2. Gateforum Educational Services Pvt. Ltd. , C-112, opp, Siddhi Vinayagar Temple, 5th Cross, Trichy
3. The Gate Academy, A-6, Second Floor, Naachiya's Park, 11th Cross Corner, Thillai Nagar, Trichy
There are many more in the list which can be searched on the net. However it is best to see the performance of the various coaching institutes during the past few years and take a decision accordingly. After all results matter.