Knock Alternatives
A curated collection of the 1 best alternatives to Knock.
The best alternative to Knock is Novu. If that doesn't suit you, we've compiled a ranked list of other open source Knock alternatives to help you find a suitable replacement.
Knock alternatives are mainly Alerting Systems but may also be API Development & Testing or API Monitoring. Browse these if you want a narrower list of alternatives or looking for a specific functionality of Knock.
Novu provides a unified API for sending notifications across multiple channels, with powerful workflows and integrations.

Novu is an open-source notification infrastructure for developers that makes it easy to build powerful notification capabilities into applications.
Some key benefits:
- Unified API for multiple channels: Send notifications via email, SMS, push, chat and more through a single API.
- Powerful workflow engine: Create complex notification flows with conditions, delays, and multi-step sequences.
- Customizable templates: Design reusable notification templates with variables and conditional logic.
- In-app notification center: Easily add an inbox and notification preferences to your app.
- Integrations: Connect to popular services like Slack, Discord, Twilio and more.
- Developer-friendly: API-first approach with SDKs for popular languages and frameworks.
- Open source: Fully open source and self-hostable for complete control and customization.
- Scalable infrastructure: Built to handle high volumes of notifications reliably.
With Novu, developers can quickly implement a robust notification system without having to build everything from scratch. The open-source nature also allows for extensive customization when needed.
Similar proprietary alternatives:


