Awesome GitHub RepositoriesQuote-to-Invoice Conversions

Akaunting is a modular business enterprise resource planning system and self-hosted accounting software. It provides a comprehensive platform for small business financial management, centering on a double-entry bookkeeping system with a general ledger and chart of accounts. The platform is designed for extensibility through a module-based architecture and a dedicated marketplace for procuring third-party applications. It supports multi-tenant data isolation and utilizes role-based access control to manage granular user permissions. Its capability surface covers a wide range of business opera

Kill Bill is a subscription billing platform and usage-based billing engine designed to manage recurring invoicing and automated payment collection. It functions as a multi-tenant billing infrastructure, providing isolated environments for different organizational entities through a dedicated API. The system is distinguished by a plugin-based extension framework that allows for the integration of third-party payment gateways and custom business logic. It includes a payment gateway orchestrator to handle transactions and refunds, as well as a revenue recognition system to allocate contract rev

EspoCRM is an open-source customer relationship management platform and SQL-based business application. It serves as a centralized web interface for tracking leads, opportunities, and contacts, providing a sales pipeline manager and a customizable business logic engine. The platform is distinguished by its ability to function as a custom business application builder, allowing for the creation of tailored entities and automated workflows. It integrates marketing automation tools for campaign coordination and a structured customer support ticketing system for case management. The system covers