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The trick to getting the best deals every time: A browser extension

From the Honey extension to OctoShop, these are the online shopping tools that find the best prices and coupon codes.

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Honey is one of the many browser extension that can save you some money while shopping. 

Honey

Amazon has a reputation for offering the lowest prices on many of its products, but it's not always the best place to find deals. Whether you're doing some casual online shopping or prepping for early Black Friday sales (check out the best discounts on TVs and headphones so far), using a coupon browser extension like OctoShop or Honey could help you find the lowest price possible. 

We've rounded up 16 browser extensions for deals and coupons (many of which also have apps for shopping on your phone) to help you quickly determine whether the best price is at Amazon, Target, Walmart, Best Buy or some other store, online or IRL. Plus, here's how to get in-stock alerts for hard-to-find items (like the PS5), and a workaround for stores that don't offer their own in-stock alerts.

Read more: Browser extensions for free books, better privacy and less distraction

A quick privacy note: The extensions on this list work by scanning every site you visit for potential coupons, which could potentially expose you to some security issues. Before installing any of them, it's worth your while to check out its privacy policy. That noted, all the ones we've highlighted below promise not to collect any personally identifiable information. 

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1. Honey

Honey compares prices between Amazon, Amazon's third-party sellers and other online retailers, factoring in estimated shipping costs and Prime status to find the best deal. 

Once you install the browser extension (on Chrome, Firefox, Safari, Opera or Edge) and navigate to a product page on Amazon, you'll see the "h" icon appear over the product photo. Clicking it takes you to the Drop List feature, which shows the product's price history and lets you set an alert for drops. If you see a tag that says "Best deal," you can be confident that no other Amazon seller offers a lower price. 

You can also search for products through the extension or on Honey's website to see current and historical pricing, coupons and availability on a range of e-commerce sites such as Walmart, JCPenney and Home Depot. 

2. PriceBlink

PriceBlink also offers price comparisons and coupons, but with a slightly different interface. Once installed (on Chrome or Firefox), when you navigate to an online shopping site, a yellow bar will appear at the top of the screen. It will alert you to any available deals and coupons on the site, and if a better price is available elsewhere.

When you navigate to an item on Amazon, click "Compare prices" on the bar at the top to see where else it's available, along with the base price, shipping costs and total price. If Amazon has the best price, the bar will say "Next best price." If it doesn't, it will say "Savings found! Buy this for less" and list the amount and the other site. 

PriceBlink also lets you track pricing over time and add items to your wish list, as well as find coupons on its website. 

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PriceBlink alerts you to better deals elsewhere (in this case eBay) on the same product.

PriceBlink/Screenshot by Rick Broida/CNET

3. InvisibleHand

If you travel, you should try InvisibleHand. It finds you the best deals on flights, hotels and rental cars, as well as the best price for other things you buy online. 

4. Pricescout

Similar to both Honey and PriceBlink, Pricescout can find coupon codes for you, while also comparing prices across different retailers. While you're shopping, it scans the sites of over 21,000 retailers and will pop up with better prices. 

5. Capital One Shopping

Capital One Shopping is a free browser extension for Chrome, Firefox, Edge and Safari. Once installed, the extension will instantly apply the best available coupons and discounts codes to your purchase at checkout. 

The expansion does price comparison among other retailers and sellers across Amazon as well, so you can find the best deal possible without having to research it yourself. The extension says it even offers rewards while you shop that can be redeemed as gift cards.

6. Rakuten

Rakuten, formerly known as Ebates, is an e-commerce site that gives customers cash-back for shopping. Former CNET editor Rick Broida described it as "easy to use and comes with no strings attached." Rakuten, however, does collect data about where you shop and what you buy. 

Read more: Surprising ways to get cash back without even trying

Available for Chrome, Firefox, Edge and Safari, the Rakuten browser extension alerts you when cash-back savings are available and saves you the detour to Rakuten's site when actively purchasing. It sometimes finds coupon codes for you as well.

OctoShop

OctoShop lets you set alerts for price drops and in-stock notifications. 

OctoShop/Screenshot by Alison DeNisco Rayome/CNET

7. Octoshop

OctoShop checks inventory across stores to help you track down a product that's frequently out of stock, like the Nintendo Switch, Xbox or PS5. It's less helpful than some of the others on this list in terms of telling you at a glance if you've got the best price (you'll have to click on the OctoShop icon to see that, instead of having it appear automatically), but once you do, it makes it easier to toggle on different options. 

After you install the browser extension, the OctoShop tab will appear above Amazon's price. Click it to see if you're getting the best price and where else the item is available. You can set alerts for price drops and in-stock notifications from different retailers. 

8. RetailMeNot

RetailMeNot's Deal Finder browser extension automatically applies the best available discount codes and cash-back options at checkout. The extension is supported by more than 20,000 retailers, including Target, Macy's, Lenovo and DoorDash. CNET has been singing the tool's praises since 2010 for making online coupon hunting less annoying.

9. Piggy

Piggy finds the lowest prices available and automatically applies coupon slides and cash-back options at checkout. The extension works at over 6,000 online stores including Amazon and eBay. According to Piggy, the extension can save you up to 55% on select hotels as well. 

10. Slickdeals

Like many other browser extensions on this list, Slickdeals shows customers the best deals, coupons and cash-back options available at the time of purchase from the online retailers that support it. 

11. Cently

Cently, formally known as Coupons at Checkout, is another browser extension that could save you some money while shopping online. Like Honey and other extensions on our list, Cently notifies customers when coupon codes are available before checkout. 

12. Amazon Assistant for Chrome

If you're an Amazon fanatic, you'll love this extension. The Amazon Assistant for Chrome is Amazon's official browser extension. It finds you the Deal of the Day, offers product and price comparisons and saves products from any website to your Amazon wish list.

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The Amazon Assistant for Chrome is Amazon's official browser extension. 

Screenshot by Alina Bradford/CNET

13. The Camelizer from Camelcamelcamel

Most savvy shoppers know that shopping at certain times can snag you the best deals. The Camelizer is an extension that shows you the price history of an item you're browsing on Amazon to help you decide whether to buy now or wait for a better deal. It will also send you price drop alerts via email or Twitter, and you can import your Amazon wish list so that you'll know when your heart's desire goes on sale.

Pro tip: If The Camelizer graph looks a little funny, right-click it and open it in a new tab.

14. Offers.com

Offers.com is a place to check for special deals such as free shipping, buy-one-get-one-free and other perks that can save you money when shopping online. This Firefox extension also finds coupon codes. When it finds a code, it saves it for you and adds it to your shopping cart. The extension also opens another browser page and displays all of the sales for the site you're viewing, so you never miss a great deal.

15. Fakespot

User reviews give you an idea of the quality of a product before you buy. The problem is, many companies hire people to post good reviews for bad products on sites like Amazon. Fakespot is an extension that analyzes reviews to see which ones are baloney and which you can trust so you're less likely to waste your money on a dud.

16. CouponCabin

CouponCabin is different from other money-saving browser extensions because it gives you little tips every time you do a search on Google, whether you're wanting to buy or not. Say you're Googling information on the latest Stephen King book. CouponCabin will give you a little alert in your search results that it's on sale. You can also earn 10 percent cash back by using this extension.

Looking for more deals? Check out how to take advantage of Amazon Warehouse Deals, the best budget app for 2021, some TikTok money-saving tipshow to make your budget recession-proof and all of the deals we collect daily on CNET. We also have a list of ways to save money every day on things around your home and streaming services, as well as gas, electric and water bills. You can even take a look at all the best early Black Friday discounts at Best Buy, Target, Walmart and other stores. 

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