Top 10 online stores & selling products

If you’re selling online, doing affiliate marketing, or just trying to understand where people are spending their money, knowing the biggest online stores — and what products sell the most on them — gives you a clear edge.

This article covers the top 10 online stores in the world based on traffic, brand power, and revenue. You’ll also see their top-selling product categories and what it means for you, whether you’re starting a business, running a blog, or promoting products as an affiliate.

1. Amazon

What It Is

Amazon is the largest online store in the world. It sells everything from books and electronics to groceries and clothing. It also runs a massive third-party seller marketplace.

Monthly Visitors

Over 2.7 billion

Best-Selling Products

• Electronics (headphones, smartwatches, laptops)

• Books (especially self-help and bestsellers)

• Home & kitchen tools (blenders, organizers)

• Cleaning supplies

• Health and wellness items (vitamins, fitness trackers)

What This Means for You

Amazon shows where general consumers spend their money. If you’re promoting products or building an online store, these categories are in constant demand. Consider using Amazon as an affiliate or researching their bestsellers before launching a new product.

2. Walmart

What It Is

Walmart is a major brick-and-mortar retailer, but its eCommerce store ranks second in the US. It offers groceries, clothing, electronics, and household items.

Monthly Visitors

Over 500 million

Best-Selling Products

• Groceries and pantry items

• Cleaning and hygiene supplies

• Budget electronics (TVs, laptops, tablets)

• Baby products

• Home essentials

What This Means for You

Walmart dominates low- to mid-price range goods. Their customer base values affordability and convenience. If you’re selling budget-friendly products, Walmart’s bestsellers offer clear clues.

3. eBay

What It Is

eBay is known for auctions and resales, but it’s also a marketplace for new products. Both individual sellers and large companies list products here.

Monthly Visitors

Over 700 million

Best-Selling Products

• Refurbished electronics

• Collectibles (trading cards, vintage toys)

• Fashion items

• Car parts and tools

• Fitness equipment

What This Means for You

eBay works well for niche items, unique finds, and resellable goods. It’s a great place to source products or test selling refurbished or collectible items with lower startup costs.

4. Alibaba

What It Is

Alibaba connects buyers with manufacturers — mostly for wholesale and dropshipping. It’s used for bulk purchases rather than single-item sales.

Monthly Visitors

Over 400 million

Best-Selling Products

• Consumer electronics

• Fashion accessories

• Beauty and skincare tools

• Toys and gifts

• Home improvement items

What This Means for You

Alibaba is useful if you’re sourcing products to sell in your own store. Their bestsellers show what people around the world are importing and reselling for profit.

5. Etsy

What It Is

Etsy is the go-to platform for handmade goods, vintage items, crafts, and personalized gifts. It’s strong in the niche and creative space.

Monthly Visitors

Over 400 million

Best-Selling Products

• Handmade jewelry

• Personalized gifts (name necklaces, custom mugs)

• Digital downloads (planners, templates)

• Home décor (wall prints, candles)

• Baby items (blankets, milestone cards)

What This Means for You

If you create or promote custom or artistic products, Etsy is the place. Even if you don’t make items yourself, you can partner with creators or research what’s trending to build related content or drop-shipping stores.

6. Target

What It Is

Target’s online store mirrors its physical retail presence, with a strong focus on household goods, fashion, and lifestyle.

Monthly Visitors

Over 200 million

Best-Selling Products

• Women’s fashion and accessories

• Beauty products

• Kitchen gadgets

• Seasonal décor

• Kids’ clothes and toys

What This Means for You

Target sells to a mostly middle-income audience. Their trends often reflect what’s popular in lifestyle, home, and fashion. If you’re writing content or doing affiliate marketing in these niches, Target’s top products are a great guide.

7. Apple

What It Is

Apple’s online store is a top seller for electronics, accessories, and digital subscriptions.

Monthly Visitors

Over 200 million

Best-Selling Products

• iPhones

• MacBooks

• Apple Watch

• AirPods

• AppleCare and subscriptions (iCloud, Apple Music)

What This Means for You

If you’re in the tech niche, Apple’s product line is a goldmine. Many accessories, add-ons, and services can be promoted to Apple users — even if you’re not promoting Apple products directly.

8. Best Buy

What It Is

Best Buy specializes in consumer electronics and appliances. It’s known for tech deals and customer service.

Monthly Visitors

Over 150 million

Best-Selling Products

• Laptops and tablets

• TVs

• Gaming consoles

• Smart home devices (Ring, Nest)

• Kitchen appliances

What This Means for You

If you’re in the gadget or tech space, Best Buy’s top products show you what’s trending. You can promote similar products through affiliate programs or compare product categories that are in demand.

9. Shopify (via independent stores)

What It Is

Shopify isn’t a single store but a platform powering over 4 million independent eCommerce businesses.

Monthly Traffic

Varies by store — collectively over 1 billion

Common Best-Selling Products on Shopify Stores

• Fitness gear (resistance bands, yoga mats)

• Beauty tools (face rollers, skincare kits)

• Fashion (athleisure, minimalist accessories)

• Pet products

• Digital downloads (courses, ebooks)

What This Means for You

Successful Shopify sellers track product trends aggressively. Their bestsellers are a direct reflection of what customers want right now. Use them to inspire affiliate content, dropshipping ideas, or niche stores.

10. Newegg

What It Is

Newegg is a tech-focused online store, popular with gamers, PC builders, and IT pros.

Monthly Visitors

Over 30 million

Best-Selling Products

• Computer parts (graphics cards, processors)

• Laptops and monitors

• Gaming accessories

• Networking equipment

• Tech gear bundles

What This Means for You

If your audience includes tech-savvy users or gamers, Newegg is a reliable source of insights. Their bestsellers can inform product reviews, tech blog content, or affiliate opportunities.

What You Can Learn from These Stores

Whether you’re a seller or an affiliate, these stores tell you a lot about what’s working right now in online commerce. Here’s how to use that insight.

1. Spot Demand

When a product category consistently ranks high on Amazon, Walmart, and Target, that’s not random. It shows ongoing demand. Use this to guide your niche selection or content strategy.

2. Understand Buyer Intent

High-performing products in electronics, beauty, and home goods show that people want solutions to practical problems. Create content that solves those problems — with affiliate links built in.

3. Research Before Launch

If you plan to sell your own products or dropship, study the bestsellers across Shopify stores and Alibaba. These are proven items with strong buying patterns.

4. Focus on Evergreen Categories

Categories like fitness, tech, parenting, pets, and personal care are always in demand. They sell year after year and work well for both sellers and affiliates.

Final Takeaway

So, which are the top online stores — and what are they selling the most?

Here’s a recap:

Knowing where buyers spend — and what they buy — helps you build smarter content, promote better products, and position your online business for success.