Google Capture the Flag 2017 - Google's 2nd annual worldwide security competition
Flynn - Run apps, databases, websites and services at scale.
Startup Security Program by Templarbit - Security practices & tools required to close large deals
Repman - Free private PHP package repository manager
The Security Checklist - The Practical Security Checklist for Web Developers
Heroku - Agile deployment platform for Ruby, Node.js, Clojure, Java, Python, and Scala. Setup takes only minutes and deploys are instant through git. Leave tedious server maintenance to Heroku and focus on your code.