Open-source billing engine for AI products — token metering with model × token_type matrix pricing, prepaid commits + drawdown, per-customer margin/COGS. Self-hosted in your VPC.
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Jul 26, 2026 - Go
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billing-engine
Here are 7 public repositories matching this topic...
Serverless utility rate engine on AWS: author bill calculations in a spreadsheet-like language (RDL) that transpiles to compiled Rust Lambda. React UI for rate authoring, plus batch processing for rate-case modeling across millions of bills.
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Jul 24, 2026 - TypeScript
The Autonomous Revenue OS for Enterprise SaaS. Built with Next.js 15, PostgreSQL, Redis, and AI-driven growth agents.
redis postgresql enterprise-software ai-agents open-core platform-engineering billing-engine bullmq drizzle-orm nextjs-15 saas-infrastructure
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May 11, 2026 - TypeScript
A guide on how to sell your Plug-Ins to marketplace owners using Stripe
marketplace stripe-api payment plug-ins fee stripe-payments stripe-subscriptions arcadier billing-engine stripe-dashboard subscription-plug subscription-plan stripe-account pricing-plan
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Sep 24, 2019 - PHP
An enterprise-grade B2B SaaS subscription and customer management system featuring a state-driven billing engine, real-time metrics dashboards, and advanced filtering. Built as a high-performance monorepo with Java 25 / Spring Boot 4 and React 19 / Vite 8
typescript kafka state-machine rest-api postgresql monorepo saas b2b tailwind-css subscription-management vite framer-motion billing-engine react-19 java-25 spring-boot-4
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Jul 3, 2026 - Java
Advanced billing engine for Laravel: subscriptions, proration, usage metering, addons, credit notes, and pluggable invoice/tax drivers on PostgreSQL. Built for SaaS, IaaS, and usage-based products.
php laravel postgresql iaas invoicing saas laravel-package billing subscriptions proration recurring-billing billing-engine metered-billing usage-billing saas-billing
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Jul 22, 2026 - PHP
Monorepo for a B2B Micro-Suite: asynchronous billing core with NestJS, BullMQ, and Prisma, plus future RevOps modules. Built with pnpm workspaces as a modular monolith.
typescript monorepo nestjs prisma billing-engine modular-monolith bullmq asynchronous-processing pnpm-workspaces b2b-micro-suite
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May 19, 2026
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