PayPal.Me VS Mango

Cash App - The easy way to send, spend, bank, and invest.

Duolingo - Duolingo is a free language learning app for iOS, Windows and Android devices. The app makes learning a new language fun by breaking learning into small lessons where you can earn points and move up through the levels. Read more about Duolingo.

Solo - Personal kanban boards hosted on your own server

Oysho - Oysho allows you to discover trendy outfits around the world easily.

Stripe - Online payment processing for internet businesses. Stripe is a suite of payment APIs that powers commerce for online businesses of all sizes. Use Stripe’s payment platform to accept and process payments online for easy-to-use commerce solutions.

Ballwool - social network marketplace