UI Cloud - The largest user interface design database in the world
Platypus - Realtime server monitoring and reporting
Qikipedia - Instant Wikipedia summary cards on any web page
Datadog - See metrics from all of your apps, tools & services in one place with Datadog's cloud monitoring as a service solution. Try it for free.
Sajari for Shopify - Smart search for your Shopify store
Nagios - Complete monitoring and alerting for servers, switches, applications, and services