juspay
An open source payments switch written in Rust to make payments fast, reliable and affordable
saleor
Saleor Core: the high performance, composable, headless commerce API.
getlago
Open Source Metering and Usage Based Billing API ⭐️ Consumption tracking, Subscription management, Pricing iterations, Payment orchestration & Revenue analytics
akaunting
Online Accounting Software
invoiceninja
A source-available invoice, quote, project and time-tracking app built with Laravel
hexclave
Open-source Auth0/Clerk alternative
hexclave
The user infrastructure platform. You choose the frontend, backend, and database. Hexclave handles everything else.
stack-auth
Open-source Auth0/Clerk alternative
killbill
Open-Source Subscription Billing & Payments Platform
GMwalletApp
开源优雅的跨平台收款网关 Easy Payment USDT——epsdt
raiden-network
Raiden Network
jazzband
Universal payment handling for Django.
meteroid-oss
Open-source Pricing and Billing Infrastructure 🚀 Subscription management, Invoicing, Pricing, Usage-based billing, Cost limiting, Grandfathering, Experiments, Revenue analytics & Actionable insights
jessepollak
:moneybag: A jQuery-free general purpose library for building credit card forms, validating inputs and formatting numbers.
spatie
Handle Stripe webhooks in a Laravel application
aviabird
A complete payment library for Elixir and Phoenix Framework
AuthorizeNet
PHP SDK for Authorize.Net API
zonelessdev
Open-source Stripe Connect alternative. ~$0.002 payout fees. Identical API to Stripe. Instant global USDC payouts. Self-hosted.
poowf
An Open Sourced Invoice System developed for anyone who needs to generate out an invoice and manage clients