Last couple of months I was involved in evaluation and implementation of ActiveMQ as message queue solution for the project I currently work on. While it is more or less mainstream open-source solution today I couldn't tell I don't miss a native PHP messaging solution. Recently I've found a sign of something similar that could potentially evolve to serious PHP messaging solution. Dropr is a distributed message queue framework written in PHP. The main goals are:

• reliable and durable (failsafe)-messaging over networks
• decentralized architecture without a single (point of failure) server instance
• easy to setup and use
• modularity for queue storage and message transports (currently filesystem storage and curl-upload are implemented)