Sell what on? For a general answer you can use various classified or eCommerce sites like craigslist, backpage, ebay, Amazon, etc.

GoMerchant, Amazon, eBay, OLX will be finer options to sell your products.

American Classifieds Tv

amazon.com for anything with a bar code, eBay.com for everything else, and etsy.com for handmade and vintage items and craft supplies.

yes

craigslist, ebay, amazon...