pg-amqp-bridge vs XMPP: What are the differences?

Developers describe pg-amqp-bridge as "Send Messages from PostgreSQL to RabbitMQ". This tool enables a decoupled architecture, think sending emails when a user signs up. Instead of having explicit code in your signup function that does the work (and slows down your response), you just have to worry about inserting the row into the database. On the other hand, XMPP is detailed as "An open XML technology for real-time communication". It is a set of open technologies for instant messaging, presence, multi-party chat, voice and video calls, collaboration, lightweight middleware, content syndication, and generalized routing of XML data.

pg-amqp-bridge can be classified as a tool in the "Message Queue" category, while XMPP is grouped under "Container Tools".

pg-amqp-bridge is an open source tool with 252 GitHub stars and 14 GitHub forks. Here's a link to pg-amqp-bridge's open source repository on GitHub.