30 Seconds of Knowledge - Become a better developer, in every new tab.
The Product Manifesto - Product Managers face the biggest challenges of our day, which is why our community needs a common set of product principles.
Random User-Agent - Automatically change the user agent after specified period of time to a randomly selected one, thus...
Intercom on Product Management - The ultimate resource for aspiring product managers
know/how Product Managers - A weekly newsletter with 5 practical tweet-length PM tips
Product School - The global leader in product management training