Open Saas Directory

Notification & Alert Management Systems

Open source notification and alerting infrastructure you can self-host. Compare Courier, Knock, and OneSignal alternatives by channels and license. Updated Sept 2026.

Novu

Novu

35,9323,939

An open-source notifications framework that simplifies sending multi-channel notifications, empowering developers to integrate powerful communication tools into their applications.

1/5/20253939 contributors
MohsenI built this — follow on X