Flowglad

Open-source payment infrastructure that eliminates the complexity of traditional payment integrations. Build sophisticated billing systems without wrestling with webhooks or managing fragile data synchronization.

Real-time billing state means your application always has access to current customer entitlements and usage data directly from the source. No more webhook delays or sync failures that break your user experience.

The full-stack SDK provides React hooks and backend functions that let you implement checkout flows, customer portals, and usage tracking with minimal code. Design pricing models using natural language and deploy instantly.

Key advantages:

• Webhook-free architecture eliminates integration headaches
• One source of truth for all billing data
• React component library for rapid UI development
• MCP-first integration works seamlessly with AI coding agents
• Usage-based billing with real-time metering
• Founder-led support from experienced developers

Built by developers for developers, with transparent pricing that scales with your business. Currently processes payments through Stripe with plans to support additional providers. Perfect for SaaS applications, API services, and any business requiring sophisticated billing logic without the traditional complexity.