The data on FindNiche upgrades on hourly basis, so you always can catch out the trending niches and make the right decisions. It also serves with different filters, so it's quite user-friendly, especially when you find to search out some products related to some specific categories or countries. All in all, just try it out.
Etsy - Buy and sell handmade or vintage items, art and supplies on Etsy, the worlds most vibrant handmade...
AliShark - Usually, you only see those top-selling products, leaving those hidden gems behind. With Alishark, It doesn't have to be a top seller to be spot anymore.
eBay - Buy and sell electronics, cars, fashion apparel, collectibles, sporting goods, digital cameras, baby items, coupons, and everything else on eBay, the world's online marketplace
Ecomhunt - Ecomhunt allows you to easily find products that are already proven to sell or how we like to call them Winning products! - in only a few clicks - it's time to stop guessing, start selling!
eBid - eBid. The worlds online auction marketplace.
AliInsider - Find Most Profitable Dropshipping Products in a Click! Analyze Competition, Check Saturation of Any Product, Find Top Suppliers & Target Markets.