A curated list of awesome automated billing systems, invoicing tools, and payment workflow hacks for freelancers, developers, and SaaS creators.
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Updated
Sep 10, 2026
A curated list of awesome automated billing systems, invoicing tools, and payment workflow hacks for freelancers, developers, and SaaS creators.
Subscribe Pro Magento 2 Integration Extension
Qaravel is a Combination of Laravel and Quasar
Angular 17+ Stripe payment plugin with support for one-time payments, subscriptions, theming, and standalone components.
PoC- All-in-one ERP solution: CRM, CMS, customer/employees management, reminder, organizer, simple and recurring billing system, ticketing system, notepad, financial reporting.
This is a Node.js ecommerce application that embeds a checkout form for subscription billing in a website with North's Recurring Billing API.
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.
A portable and modular e-commerce subscription platform
Open-source, self-hosted FreshBooks alternative for freelancers. Invoicing, time tracking, recurring billing, multi-currency, Mercury/Wise bank reconciliation. Next.js + SQLite. AGPL-3.0.
Top Subscription Management π Star if you like it! π
Paystack β independent third-party profile of a public API surface, by API Evangelist. Paystack is an African payment processor (acquired by Stripe in 2020) that lets businesses accept payments in Nigeria, Ghana, South Africa, Kenya, CΓ΄te d'Ivoire, and Egypt across cards, bank transfers, USSD, QR, EFT, and mobile money channels.
A high-level API for managing recurring subscription payments as a Go library or a microservice
Pagar.me β independent third-party profile of a public API surface, by API Evangelist. Pagar.me is the API-first online payments platform from Stone Co., one of Brazil's largest financial technology companies. Often called "the Stripe of Brazil," Pagar.me provides Brazilian e-commerce merchants, marketplaces, SaaS companies, and subscription busine
Self-hosted recurring bill tracker
A community-maintained Authorize.Net SDK for Dart & Flutter
Non-custodial TypeScript SDK for USDC billing on Base: subscriptions, payment links, invoices, webhooks, and sandbox.
Professional Telegram Monetization SaaS. Auto-payments (Stripe, Crypto, PayPal), membership management, content protection, and analytics for Telegram channels.
Top Digital Subscription Platform (Opensource) π Star if you like it! π
Top Subscriptions π Star if you like it! π
Smart contracts powering decentralized recurring subscription billing using Account Abstraction.
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