UniBee

UniBee is an open-source subscription billing platform. It provides a dedicated system for SaaS businesses to manage customer subscriptions, automate invoicing, and track financial transactions. The software is deployed as a server-side application and is typically run using Docker Compose to orchestrate the necessary containers.

The platform allows operators to define product plans and handle the entire lifecycle of a subscription from initial creation to final cancellation. It includes a built-in user portal for customers to manage their own accounts, though it can also be integrated into existing software architectures via a dedicated API. This makes it suitable for businesses that want to maintain their own billing infrastructure while automating the repetitive aspects of revenue collection.

Key features

• Subscription management for creating, updating, and canceling plans
• Automated invoice generation and delivery to customers
• Tracking of billable metrics for business performance analysis
• Product and plan configuration and management
• Real-time event notifications via webhooks
• User and permission management for internal administration
• Transaction and refund tracking
• Discount creation and management for customer acquisition
• Integrated user portal and API for external system integration

UniBee is designed for SaaS providers who require a flexible billing layer. It is licensed under AGPLv3 and offers both a community version for self-hosting and a paid cloud version for managed scaling and premium support. The technical architecture relies on a combination of a database and Redis to handle API requests and data storage, ensuring that transaction records and subscription states are maintained consistently.

This software serves as a self-hosted billing engine for businesses seeking more control over their subscription data and pricing logic.