The Product Folks - A volunteer-led community of product managers and makers
Random User-Agent - Automatically change the user agent after specified period of time to a randomly selected one, thus...
Product School - The global leader in product management training
User-Agent Switcher and Manager - spoofs browser's User-Agent string.
Intercom on Product Management - The ultimate resource for aspiring product managers
30 Seconds of Knowledge - Become a better developer, in every new tab.