Locust.io - an open source load testing tool. Define user behaviour with Python code, and swarm your system with millions of simultaneous users.
Best Practices for Building a Microservice Architecture. Looks like a wide set of questions covered.
Broadway provides infrastructure and testing helpers for creating CQRS and event sourced applications in PHP
Active Interaction - an implementation of the command pattern in Ruby. To organize and manags application-specific business logic.
Locust.io - an open source load testing tool. Define user behaviour with Python code, and swarm your system with millions of simultaneous users.
Workerman - a library for event-driven programming in PHP. Alternative to ReactPHP.
Trailblazer - a new Concept or a Domain Driven application structure for Rails. Tries to get rid of fat models, monolithic controllers, global helpers, etc.
ramjet - morph DOM elements from one state to another with smooth transitions