Payment/Billing

Braintree - A full stack payment platform that helps merchants accept online and mobile payments (FT)

Chargify - Helps in managing business revenue and customer life cycle (FT)

Cheddar - Provides a full-featured, easy-to-use billing, and recurring subscription management system to accept and track one-time charges and recurring payments (F) (FT)

Chargebee - Cloud based Subscription Billing Solution, providing elegant & comprehensive recurring billing solution for businesses worldwide 

Earthport - International payments services for banks and commercial organisations

Eway - An online payment gateway used by 13,000+ businesses to process credit card payments (FT)

Hiveage - Simple but powerful invoice and billing SaaS for SME’s (FT)

Kerpay - Easy way to collect recurring or on the spot payments via your mobile

Latipay - Global mobile payment app and portal

Moon Clerk - Multi platform recurring payment system.  Works with Facebook, email etc.

Pay Anywhere - Mobile credit card processing

Paycorp - Australian payment solutions company

PaymentWall - Payment platform connecting you to all payment platforms worldwide using a single API

Payoneer - Cross border billing platform. Includes escrow services and API's for marketplaces

PayPal (F)

Pin Payments - Australia’s first all-in-one online payment system (FT)

Recurly - Subscription billing automation and management (FT)

Reliabils - U.S. Only subscription and recurring billing platform for SME’s

SecurionPay - Full featured, innovative payment system for European based businesses 

Spreedly - Spreedly is a payments platform for (primarily) online commerce (FT)

Square - Sell on the go. Allows users to run business on an iPhone, iPad, or Android device

Stripe - A set of tools that instantly enable businesses to accept and manage online payments (FT)

Subscription Bridge - The recurring billing platform for all businesses. (FT)

Tradeshift - A web based business network and also a free invoicing platform (F)

Transfer Guru - Great rates for international business funds transfers

Transfer Wise - Offers up to 8x better rates than banks for international funds transfers

Vindicia - SaaS based payments platform focused on subscriptions and recurring revenue

Zooz - Provider agnostic payments platform that allows you to connect with multiple payment providers