What started a short list became quite a big description, more details inside the post.
Best Practices for Building a Microservice Architecture. Looks like a wide set of questions covered.
Responive Man made my day :) That's really the whole point of nowadays responsive web design.
Carbon - a simple PHP API extension for DateTime. Just everything you may need while working with dates in PHP.
seenjs.io renders 3D scenes into SVG or Canvas. I am quite impressed with this demo
GestureKit SDK (JS) for creating and recognising gestures in mobile and web apps
Nice looking cross-platform MongoDB GUI client RoboMongo