Some of the best colleges in kerala which provides BCA are-
1. St Joseph's College devagiri- Calicut
2.Bishop vayalil memorial holy cross college- Kottayam
3.mahatma Gandhi University Kottayam
4.st. Mary College suthan batheri
5.jai bharat arts and science College
6.st Teresa's college.
7.KMM college of arts and science.
Hope this will help you