In today’s world, selling your belongings online isn’t just a way to declutter—it can also become a reliable source of extra income. Whether you’re hoping to cover an unexpected expense, save for a special purchase, or even start a small business, there are plenty of platforms that make it easier than ever to turn unused items into cash.

The first step to successful online selling is preparation. Taking the time to create an appealing listing can make a huge difference in attracting buyers and getting the price you want. Good photos, detailed descriptions, and relevant keywords help your items stand out and appear in search results. Studying top sellers in your category can also give you valuable insights into pricing, photography, and product presentation.

If your goal is quick cash, there are even websites and apps that pay you for small tasks, surveys, or sharing your opinions online. While these won’t replace a full-time income, they’re a great way to supplement your earnings without selling physical items.

Once you’re ready to list your belongings, it’s important to choose the right platform. Some sites are ideal for reaching millions of buyers nationwide, while others are better for local transactions where you can meet buyers in person. Each platform has its own rules, fees, and selling process, so picking the one that matches your needs is key.

Here’s a breakdown of some of the best websites and apps to sell your stuff online:

1. Amazon Amazon has evolved far beyond books, with millions of shoppers beginning their product searches here. Sellers can choose between an Individual Seller Plan, which charges 99 cents per sale with no monthly fee, or a Professional Seller Plan, which costs $39.99 per month but removes the per-sale fee and allows unlimited listings. Fulfillment by Amazon (FBA) is an option for those who want Amazon to handle storage, shipping, and returns. FBA fees vary depending on product type, size, and weight, but it’s a convenient way to scale your online business.

2. eBay eBay has long been known as a marketplace for unique finds and collectibles. Sellers can create auction listings or fixed-price listings and choose from subscription tiers for stores, each with different monthly fees and benefits. eBay also charges a final-value fee on each sale. Shipping is usually handled by the seller, though fees can often be factored into the item price.

3. Etsy Etsy is the go-to platform for handmade, vintage, and artistic items. While opening a shop is free, each listing incurs a small fee, and sales are subject to a 6.5% transaction fee. Etsy Plus offers additional features like listing credits and ad credits for $10 per month, and you can even create a custom website through Etsy’s Pattern service.

4. Craigslist A classic option for local selling, Craigslist allows you to list items for free and connect directly with buyers in your area. The site encourages in-person transactions and provides a simple platform to describe your item and upload photos.

5. Facebook Marketplace With Marketplace, you can reach buyers in your community while also checking their profiles for added security. Facebook allows direct payments through Messenger or via PayPal and credit/debit cards. Selling is free, but all listings must comply with Facebook’s commerce policies.

6. Nextdoor Nextdoor is a private social network focused on neighborhoods. Members verify their addresses, which helps create a trusted environment for local transactions. It’s ideal for selling items locally without shipping.

7. OfferUp OfferUp combines local and national listings in a mobile-focused platform. You can post multiple photos, set pricing, and decide if you want to sell locally or ship nationwide. Listing is free, but national sales incur a 12.9% fee of the final sale price.

8. Gameflip Gamers can sell video games, gift cards, and even in-game items on Gameflip. Sellers pay an 8% commission plus fees for digital items, though paid memberships reduce these rates. The platform also allows selling services like tutoring or graphic design.

9. Gazelle Gazelle specializes in buying used tech, including smartphones, tablets, and laptops. After getting a quote online, you ship your items with a prepaid label, and payment is issued once the item is verified. Quick cash is also available through EcoATM kiosks, though usually at a lower rate.

10. Poshmark A social marketplace for fashion, Poshmark allows sellers to list clothing, shoes, and accessories. Poshmark takes a commission—$2.95 for items under $15 and 20% for items over $15—but handles shipping for free, providing pre-labeled packages for sellers.

11. ThredUP For clothes you no longer wear, ThredUP offers a convenient solution. Send in a “clean out kit” for either donation or sale. Accepted items earn a percentage of the listing price, while rejected items are recycled.

12. Vestiaire Collective Vestiaire Collective focuses on high-end fashion, including designer clothing, accessories, and wedding-related items. Sellers can choose between company-supplied shipping or self-shipping. Fees are based on the sale price, and payouts are quick, often within 24 hours to a PayPal account.

Selling online can be a simple way to make extra money, but success comes from thoughtful preparation and attention to detail. Take clear photos, write accurate descriptions, and price items fairly. With the right approach and platform, you can turn unused items into a steady stream of income.