Matrimonials India is a matrimonial service. The home page was a little busy to navigate however there is no fee to register and you can begin browsing through profiles once your registeration is complete.
The site was easy to use, especially their search feature which you can search by caste, religion, mother tongue and profession.
When doing search you'll find that you won't be able to search by zip code, so bear in mind that the site may be better suited toward finding Indians worldwide and getting to know them online rather than local dating.
The site offers a customer service line that you can call however there is no toll free number to use so if you are in the states you may want to stick with just emailing your questions.