The following are among the top 10 online shopping platforms worldwide in 2021:
1. Amazon
2. Alibaba
3. eBay
4. JD.com
5. Walmart
6. Shopify
7. Flipkart
8. Taobao
9. Rakuten
10. Lazada
Please note that this list is based on general global popularity and may vary depending on specific regions or markets.