HappyMeter - A frictionless way to measure happiness and job satisfaction
Everything.PM - 300+ resources & tools for PMs, sorted by votes
Ninety.io - Make the most of your 90-Day World™ by utilizing EOS software that integrates your Six Key Components™ to accelerate your V/TO™.
PM Starter Pack - Practical guide on how to get started in product management
Teambit - Teambit is a team engagement and performance platform, that makes feedback a daily habit.
Product Manager Handbook - Interviews w/ product managers + weekly newsletter