Node.js: https://docs.nodejitsu.com/articles/errors/what-are-the-error-conventions https://www.joyent.com/developers/node/design/errors
Express: http://expressjs.com/guide/error-handling.html
MongoDB/Mongoose: http://mongoosejs.com/docs/2.7.x/docs/errors.html
AngularJS: https://docs.angularjs.org/api/ng/service/$exceptionHandler http://odetocode.com/blogs/scott/archive/2014/04/21/better-error-handling-in-angularjs.aspx
Pingdom: https://www.pingdom.com/free/
http://www.downforeveryoneorjustme.com/
Airbrake SSJS error monitoring: https://airbrake.io/languages/node_exception_handling
Airbrake CSJS error tracking: https://airbrake.io/languages/javascript_exception_handler
Airbrake CSJS error tracking: https://airbrake.io/languages/javascript_exception_handler