The Product Management guide - A book on how to create and ship products that people love
Huntathon - Browse and submit Product Hunt Global Hackathon projects
Sunsama - Calendar and scheduling for teams
Confs.tech - Open source list of tech conferences: JS / Ruby / Data etc.
Product Management Templates - 9 essential templates created by product leaders
Ship That Shit - Join 3 no BS events to help you ship that shit