Open-source Multi-channel Notification Service
"Notifo provides an open-source notification system for e-commerce, cloud applications and news for all channels.
It has been developed to be able to subscribe to changes for a single content item or schema, contributors or whatever you are interested in and to get push notifications when something changes.
Notifo helps you send out notifications via email, web or mobile push, messaging or SMS, and also offers an API so you can pull notifications and show them in your UI.
It also features scheduled publishing, intelligent notification aggregation and detailed tracking and reporting.
It's built using React, Redux & TypeScript for the frontend, and ASP.NET and MongoDB for the backend."