Hello,

There are 23 IITs in India. IIT stands for Indian Institute of Technology. They are considered as best colleges for B.tech courses. The faculty is well experienced, students are brilliant here and placement in excellent. For getting admission into IITs you need to appear and qualify JEE Mains first after that JEE Advance.

Out of 23 Top 5 IITs are -

1. IIT Bombay
2. IIT Delhi
3. IIT Madras
4. IIT Kanpur
5. IIT Kharagpur

There are 31 NITs in India. NIT stands for National Institute of Technology. After IITs, NITs are considered as best engineering colleges in India. Admission is done on the basis of merit scored in JEE Mains

Out of 31 Top 5 NITs are -

1. NIT Tiruchirappalli
2. NIT Warangal
3. NIT Rourkela
4. NIT Allahabad
5. NIT Silchar

There 25 IIITs in India. IIITs stands for Indianl Institute of Information Technology. After IITs and NITs, IIITs are best choice for engineering courses. Admission is done on basis of marks scored in JEE Mains.

Out of 25 Top 5 IIITs are -

1. IIIT Allahabad
2. IIIT Lucknow
3. IIIT Tiruchirappalli
4. IIIT Kota
5. IIIT Surat

All IITs, NITs, IIITs are government  institution and their fees is very less.

IIIT also stands for International institute of Information Technology. These two are private institutions.There are two International institute of Information Technology, one in Hyderabad, one in Bangalore. Both takes admission on basis of JEE Main Marks

Hope this was helpful