I've made some open source code for backend development.

Open source (Node.js)

bsw: framework for beanstalkd queue
no-config: config and resource loader
require-all-root: require all files from app's root path
dummy-corsproxy: dumb proxy to bypass disabled CORS
tmfy: timeouts for promises and promisified functions

Posts and tutorials

How to avoid callback hell with ES6 Promises and generators
(Node.js) config done right