Horizon vs Pusher: What are the differences?
Developers describe Horizon as "*A realtime, open-source JavaScript back end from RethinkDB *". Horizon provides a complete backend that makes it dramatically simpler to build, deploy, manage, and scale engaging JavaScript web and mobile apps. Horizon is extensible, integrates with the Node.js stack, and allows building modern, arbitrarily complex applications. On the other hand, Pusher is detailed as "Hosted APIs to build realtime apps with less code". Pusher is the category leader in delightful APIs for app developers building communication and collaboration features.
Horizon and Pusher can be primarily classified as "Realtime Backend / API" tools.
Horizon is an open source tool with 6.77K GitHub stars and 389 GitHub forks. Here's a link to Horizon's open source repository on GitHub.