UniBee

BlueSnap's All-in-One Accounts Receivable Automation solution, formerly Armatic, is the highest rated software solution for Payment Processing, Billing/Invoicing, Recurring Billing and Subscription Management. Billing and Invoicing: Create beautiful invoices with our powerful invoice editor synced into your accounting system. Provide a customer portal, automatic charging, payment collection, and apply late fees. Recurring Billing & Subscription Management: BlueSnap provides enterprise-class subscription billing management for fast-growing businesses worldwide. Enable trial periods, manage plans, or prorate subscriptions. Payment Processing: BlueSnap is processor agnostic and provides integrations to all types of payment solutions from credit card payments, ACH, SEPA to wires. We handle partial payments, automatic failed payment retry, and automatic payment recovery.

Kill Bill has automated the world's most complex billing problems. Kill Bill has been the leading open-source billing and payment platform for the past 10 years. Organizations around the globe, from startups to public companies, trust Kill Bill to invoice billions every year. Scale your billing and payment infrastructure and grow your business. Access real-time analytics and financial reports. Control your business and client data and avoid vendor lock-in. Your customer’s data belongs to you. You’ll have real-time access to it with basic or custom reports. Test various billing models to see which is most profitable for your business. Run trials and easily accommodate even the briefest promotional discounts. Kill Bill is free and includes all of the basic billing and payment features. Even if you need to create your own customizations, Kill Bill is still a very affordable solution.