Nchan vs Simperium: What are the differences?

What is Nchan? A scalable, flexible pub/sub server for the modern web. It is built as a module for the Nginx web server. It can be configured as a standalone server, or as a shim between your application and hundreds, thousands, or millions of live subscribers. It can buffer messages in memory, on-disk, or via Redis.

What is Simperium? Move data everywhere it's needed, instantly and automatically. Simperium is a new kind of data layer. As your app reads and writes data, Simperium circulates that data everywhere it's needed. You add a Simperium library to your app and initialize it. This library keeps a persistent connection to the Simperium hosted service. The Simperium libraries and service work together to efficiently move data around for your users.

Nchan and Simperium belong to "Realtime Backend / API" category of the tech stack.

Some of the features offered by Nchan are:

• flexible pub/sub server
• Horizontally scalable (using Redis)
• Subscribe to hundreds of channels over a single subscriber connection.

On the other hand, Simperium provides the following key features:

• Data transparently moves across mobile, web, and desktop versions of your app
• Your users can read and write data even when they're offline
• Multiple users can collaborate with the same data at the same time

Nchan is an open source tool with 2.35K GitHub stars and 243 GitHub forks. Here's a link to Nchan's open source repository on GitHub.