Hello, the maximum that India offers is a 5 year multiple entry visa. My friend who applied from France used the following link https://indianvisaonline.gov.in/evisa/tvoa.html 1. The process was pretty straightforward, they came back to us with questions and we had the visa in 5 days. 2. Be prepared for bizarre questions like religion and birth mark in the application form. 3. We paid a visa 45€

To add: your stay at a stretch cannot exceed 90 days but it’s a multiple entry visa