Dolibarr ERP CRM is a modern software package to manage your company or foundation's activity (contacts, suppliers, invoices, orders, stocks, agenda, accounting, ...). it's an open source Web application (written in PHP) designed for businesses of any sizes, foundations and freelancers.
Purchase GitHub Repositories (2026) · Open Source Tools
Discover the best Purchase open source repositories on GitHub. Explore trending tools, live star counts, source code, and developer projects updated daily.
FKIAB - f**ks in app billing
Build, Measure and Grow iOS subscription business
Remotely configure every aspect of your paywall and double your revenue.
A simple implementation of the Android In-App Billing API.
Standardized protocol for in-app purchases across all platforms — backed by Meta & Amazon
Unity in-app purchases and subscriptions made easy.
RevenueCat SDK for Android & Jetpack Compose, easy in-app purchases and subscriptions.
PHP receipt validator for Apple iTunes, Google Play and Amazon App Store