Nifty - Manage projects, work, and communications in one place.
Project Management Core Concepts - Book on core concepts of project management in plain English
Product Frameworks - Discover product frameworks used to help build products
UpDiagram - Free agile project management tool for scrum team
Chef - Automation for all of your technology. Overcome the complexity and rapidly ship your infrastructure and apps anywhere with automation.
Party Line - Use Slack to manage your projects