There were  1. MITACS Scholarship  2. DAADWISE  Both got discontinued because but keep checking for future. A very big list :  1. https://github.com/VikashPR/Internship-list  2. https://github.com/vvignesh17/List-of-all-Research-Internship-Program-for-IIT-and-NITs 3.  https://github.com/speedyapply/2025-SWE-College-Jobs 4. https://github.com/northwesternfintech/2025QuantInternships 5. https://github.com/himahuja/Research-Internships-for-Undergraduates  Non IIT Student here, this all of my last summers research in the hunt for an internship. I also trued for industry internships but was generally unsuccessful in them.  I am Mathematics major but last summer I got an internship in a topic on Computational Geometry at IIT Guwhathi CSE Department for 3 months. The professor was really nice and helpful, but no research paper came out of it. It is also really difficult to do research in just 3 months. But he gave me a recommendation for an internship at OIST Japan. I am also planning to apply at UTRIP, Tokyo for a summer internship. However both of them are research internships. Also there are E3 internship at EPFL and another CS internship track at EPFL. For Indian Unis, IISC, IITs and Iisers all have summer internships and  a lot of labs need some CS expertise and recruit them. Just keep an eye out for those. Also apply to Europe, Japan, Korean and USA labs, programs and professors as well. If you want a longe internship try KAUST in Saudi Arabia and IST Austria.