Kolkata
- Accel Frontline Ltd
- Accenture
- Capgemini
- Cognizant
- HCL Technologies
- IBM
- ITC Infotech
- Siemens
- Tata Consultancy Services
- Tech Mahindra
- Wipro
- Nokia Siemens
- Sankalp Semiconductor
Read more about this topic: Software Companies Of India
Kolkata
Read more about this topic: Software Companies Of India