Open Source Metering and Usage Based Billing API ⭐️ Consumption tracking, Subscription management, Pricing iterations, Payment orchestration & Revenue analytics
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Polar — A billing platform for the intelligence era
Online Accounting Software
Ever® Gauzy™ - Open Business Management Platform (ERP/CRM/HRM/ATS/PM) - https://gauzy.co
Open-Source Subscription Billing & Payments Platform
A self-hosted open source application for managing your invoices, clients and payments.
AWS Usage Tool
Deep neural network to extract intelligent information from invoice documents.
Laravel Cashier provides an expressive, fluent interface to Stripe's subscription billing services.
Empower your hosting business with FOSSBilling, the free and open-source solution for efficient billing and client management.
Open-source ETL/ELT you deploy on your own servers or cloud. Built on DuckDB: no-code/low-code visual pipelines or SQL, 385 components, dbt, CDC, data quality, reverse ETL, lineage, MCP for AI agents. No vendor cloud, no per-row billing.
💰 Billing & Payments knowledge for cloud platforms
All in One PSA for MSPs, which Unifies client, contact, vendor, asset, license, domain, ssl certificate, password, documentation, file, network and location management with ticketing and billing capabilities, with a client portal on the side.
Simple and elegant invoicing solution.
Modern & private time tracking for macOS & Windows. No cloud, no registration, no paywall. Just download and track your work hours 100% offline.
Finala is an open-source resource cloud scanner that analyzes, discloses, presents and notifies about wasteful and unused resources.
Double-entry accounting & ERP for the web
A complete payment library for Elixir and Phoenix Framework
Powerful open-source CLI to audit security, costs, and best practices in AWS. 🩺 ☁️
Rails 8 app template: Devise auth, Stripe billing, Tailwind CSS, admin panel, SEO helpers, etc
推量牛 BullFlow — 开源企业级 RAG 解决方案：从企业知识库、营销内容自动化生产到全域内容分发 | Open-source enterprise RAG solution: knowledge base → automated marketing content → omnichannel publishing. 知识库全链路本地开源模型，无需付费模型；AI Agent 创作图文 / 图片 / 视频，一键发布抖音、小红书、公众号、LinkedIn、YouTube 等 17 个平台。Commercial-grade, multi-tenant, billing & admin built in. MIT
Ultra-fast token & cost tracker for LLM Token Usage (e.g. Claude Code)
A payment processing library for Elixir
:money_with_wings: PayPal REST API client for the Elixir language (elixir-lang)