Knock vs. Novu

Knock is infrastructure for sending product and customer messaging. Ship cross-channel product notifications and lifecycle messaging that drives engagement, growth, and retention. Knock has everything you need to power notifications for your product, including: - A powerful workflow engine to automate and manage your entire cross-channel motion, from in-product messaging to email and push notifications. - Branded, in-product messaging components, including embeddable inboxes, feeds, and lifecycle messages. - Broadcasts make it easy to send effective, one-time messages to custom audiences.

Novu is open-source notification infrastructure that gives engineering and product teams a single API to send notifications across In-App, Email, SMS, Push, and Chat channels. Instead of building custom delivery logic and managing multiple provider integrations, teams use Novu to define multi-step notification workflows and ship in minutes. Novu is built for developers and product teams at companies of any size - from startups shipping their first transactional emails to enterprises managing millions of notifications per month across complex, multi-tenant applications.