bca add on courses are available in Kerala which collages are available
If by BCA add on courses, you mean to know, the BCA specialization course, then I am providing the name of the colleges in kerala which offers the course of BCA with specialization in Data Science, Cybersecurity & Forensic science, IoT etc-
Amrita School of Arts and Sciences, Amritapuri
Jawaharlal Nehru Institute of Arts and Science, Idukki
For colleges offering the course of BCA in kerala consider the link below:
https://university.careers360.com/colleges/list-of-bca-degree-colleges-in-kerala
For more information regarding BCA as a career consider the link below:
https://www.careers360.com/courses/bca-bachelor-of-computer-applications
I hope this helps. Wish you a great eve!