Really Good UX - A library of screenshots for UX inspiration
Promoter - The Most Effective Way To Engage And Learn From Customers
Startup Timelines - How the frontpages of famous startups changed over time
Open Loyalty for Startups - Open source stack for building customer focused products
UXTesting - Discover how your mobile users feel
HelpCrunch - HelpCrunch Live Chat: Turn prospects into customers, drive sales and improve retention with a rich toolbox combining modern live chat, in-app messenger, email marketing, CRM and marketing automation.