A PWA (single-page app) backed by a REST API. It packs a lot: a notification system over push, WebSocket and email; user roles and permissions; automated invoicing for end customers; appointment management; product shipments; and full contract management and workflow — among much more. Development is a continuous stream of improvements, but it rests on a stable base built since 2021, is well documented, and ships with unit tests covering the system's core functions.
