Novy

Open-source notification infrastructure that unifies multi-channel delivery into a single system. Manages email, SMS, push, in-app, and chat notifications through one API, with workflow orchestration and digest support so teams can ship notifications without rebuilding delivery logic for each channel.

Used by product teams and adopted across startups and enterprises. Differentiates by combining a low-code workflow editor with code-first flexibility: start with UI components or switch to framework workflows when you need runtime control, local data, or React Email templates. Offers server SDKs for TypeScript, Python, Go, PHP, .NET, Java, Kotlin, Laravel, and Ruby, plus client SDKs for React, React Native, and vanilla JavaScript.

Key capabilities:

• Unified workflow orchestration for email, SMS, push, in-app, and chat channels
• Digest engine to batch multiple events into single email or SMS messages
• Pre-built Inbox component for React, Next.js, and Remix
• Block-based email editor powered by React Email
• Integrations with Twilio, Resend, Clerk, Stripe, and custom providers

Developers add an in-app notification center with a few lines of code, then extend to transactional emails, OTPs, or digest newsletters. Suited for onboarding flows, security alerts, collaboration pings, and product updates. Self-hostable or consumed as a managed service with EU data residency options.