IDURAR

IDURAR is an open-source ERP and CRM application that covers invoicing, quotes, payments and customer management, with accounting-oriented features. It is built on the MERN stack of MongoDB, Express.js, React and Node.js, with Ant Design for the interface and Redux for state.

The README lists invoice management, payment management, quote management and customer management as its main features and links to a hosted enterprise cloud version. It states clearly that you may use IDURAR for free for personal or commercial purposes. Repository topics include accounting, e-commerce and CRM, and it is written in JavaScript.

GitHub lists the license as AGPL-3.0, so check its obligations if you modify and offer it over a network. IDURAR is deployed on your own server, or you can use the vendor's cloud. It suits freelancers and small businesses that want a basic invoicing and customer system they can customize in JavaScript.