icliniq - Get medical second opinion on #slack from real doctors
Hyperping - Cheap uptime and performance monitoring with detailed reporting and flexible alerting
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Monkey Test It - Primate powered algorithms that scan your site for common bugs and SEO mistakes.
First Opinion - Text a doctor for free
NIXStats - SaaS monitoring tool for window/linux servers and websites. Think up-time robot but with more features.