Online grocery shopping is revolutionizing supermarkets. There is more variety online compared to local stores and their space constraints. You can place an order at any time of the day seven days a week. The very best grocery websites also provide a online chat which allows you to talk with someone to sort out any ordering problems immediately. Returns and exchanges can be made with one click of a button. Online grocery shopping can also prevent you from impulse buying. Most stores offer in-store pick up services where they will do the shopping for you. You can pick-up your groceries at a specific time you choose. The best part of online grocery shopping is that your groceries can be delivered right to your doorstep. Overall the online grocery shopping experience is not just convenient but also encourages big savings. Here is a list of the most popular online grocery retailers worldwide.

1 - Walmart

Walmart is one of the most popular retail stores in the world. They offer two grocery ordering options. You can either have your groceries delivered straight to your door, or you can pick them up at a specified time. Most Walmart locations will allow you to pay for your groceries with an electronic benefit transfer card online. There is no membership fee required and no additional charge for in-store pickup or delivery.

2 - AmazonFresh

With an Amazon Prime membership, you will have access to AmazonFresh for only $15 a month. You can purchase practically anything that you would find at your local grocery store including meat, organic vegetables, canned goods, packaged foods, fruit, and condiments. You will also have access to over 1,000 Whole Foods products. Your groceries are delivered either same-day or next-day with delivery being free on orders over $50. Amazon allows you to try their AmazonFresh service free for 30 days.

3 - FreshDirect

FreshDirect delivers fresh gourmet and organic food to several areas within the United States. The food comes from local dairies and farmers and provides gluten-free, kosher, and other natural options. FreshDirect is always evolving, continually innovating to bring you the freshest foods. Deals are handpicked weekly, and their food is always double-checked before it arrives at your door. They will store your grocery list for convenient reordering. At FreshDirect you will find better products at the right prices.

4 - ShopFoodEx

ShopFoodEx carries over 10,000 grocery items. Customers can purchase groceries online and have them delivered to anywhere around the world. Orders can also be shipped to Military APO's, FPO's, PO's, and overseas via International checkout. ShopFoodEx is dedicated to exceeding their customer's expectations and strives to make every order right. They donate food to local churches and make financial donations to food kitchens and schools.

5 - Boxed

Boxed delivers the products you love in bulk at discount prices. Delivery is fast and free on all orders over $49 arriving within two business days. There are no membership fees required, and orders are delivered straight to your door. They offer popular products, household favorites, and new handpicked brands. Businesses can keep their offices stocked with snacks and cleaning supplies. You can shop anywhere and anytime through the Boxed app conveniently on the iPhone and Android.