Novu is an open-source notifications platform with a unified API, workflow orchestration, and embeddable in-app inbox for email, SMS, push, and chat.

39.7k stars4.5k forkslast commit Actively maintained
SaaS notification infrastructure for developers to create, manage and deliver multi-channel product notifications (email, SMS, push, in-app) using templates, orchestration workflows, integrations and delivery tracking.
Novu is an open-source notifications platform with a unified API, workflow orchestration, and embeddable in-app inbox for email, SMS, push, and chat.

39.7k stars4.5k forkslast commit Actively maintained
Open-source multi-channel notification service with REST API, management UI, templates and channel abstraction for email, web, push and SMS; built with ASP.NET Core and React.

879 stars83 forksMITlast commit Actively maintained
Every option on this page is open source and free to run on your own hardware, so you own the data and there is no subscription to cancel. 2 of 2 shipped a commit in the last six months. Licences in this list: MIT. In exchange you take on hosting, backups and updates yourself.
Browse everything in Automation & Workflow Builders (Low-code).