Novu

Novu is an open‑source notification platform that lets developers add multi‑channel messaging to web and mobile applications through a single API. It supports Inbox/In‑App, Email, SMS, Push, and Chat channels, and provides a real‑time embeddable Inbox component that can be integrated with a few lines of code. The system includes a workflow engine, a digest engine for bundling messages, and a no‑code block editor for creating rich email content.

The platform is designed for product teams that need to manage user notifications without building the infrastructure from scratch. Built‑in user‑preference and snooze components give end users control over how and when they receive alerts, while the API‑first approach enables custom routing and conditional delivery across providers.

Novu can be self‑hosted, is released under the MIT license, and offers a free tier with no subscription requirements. It is positioned as a stable, community‑driven solution that integrates with popular front‑end frameworks such as React and Next.js, allowing teams to start quickly and scale their notification capabilities as needed.