Top Buy Now, Pay Later (BNPL) platforms include Affirm, Klarna, Afterpay, PayPal Pay Later, Zip, Sezzle, Splitit, Sunbit, Perpay, and Tabby. These platforms offer features like flexible installment payments, interest-free financing, merchant integration, fraud prevention, quick consumer approvals, and global payment support. Affirm, Klarna, and Afterpay are popular for broad merchant acceptance and consumer-friendly repayment options, while PayPal Pay Later and Zip are known for easy checkout integration. Overall, they differ in approval criteria, repayment flexibility, international availability, and merchant tools, helping businesses increase conversions and giving consumers more accessible payment options.