LocalBanya.com is a newly launched grocery portal servicing Mumbai. Free home delivery on all orders. Minimum order is Rs. 500.
I placed 3 orders last week, 2 of which were within the promised timeslot. One was delayed by 10 mins but it is acceptable in a city like Mumbai. Currently, they accept only Cash on delivery, and I hope they add credit card on delivery soon. They stock limited brands and some of the fast moving items are also out of stock, but I would stick to them atleast during the monsoons for my grocery needs.
Forgot to mention, they offer discounts on every item. Overall, a very positive experience.