Killbill - Open-Source Subscription Billing and Payment Platform
Odoo - An all-integrated business app suite to unleash your growth potential.
Subscription Billing - Sales Order Processing that automates and manages cyclical and subscription based billings by generating invoices, quotes or orders in Dynamics GP.
Sage Intacct - Intacct is a cloud-based accounting and financial management system that is designed for the businesses of all levels.
Tossy - Create subscription based memberships & donations for India
Epicor Kinetic - Epicor ERP is a global enterprise resource planning solution.