Payment Pages by involve.me - Collect Stripe & PayPal payments online with custom pages
Atom Pay - Atom is the easiest way to get paid for what you do.
Razorpay Payment Pages - Easiest way to get paid with personalised pages in India
Payzo - Accept credit cards with zero coding (for freelancers)
Checkout Page - Sell on your site with customizable checkouts. Tailor-made one page checkouts to sell digital products & services without an ecommerce store.
PayRequest - SImple Fast Payment Links