BuiltWith - Find out the technology behind websites

Stridekick - Join friends and take strides towards achieving better health.

Wappalyzer - Wappalyzer is a technology profilers and leads data provider. Create lists of websites and contacts that use certain technologies.

Azumio - Azumio is a mobile health company that specializes in mobile biometric technology, which is designed to track your health status and provide daily, weekly, or monthly basis reports related to workouts in the form of graphs or charts.

WhatRuns - Extension that helps you identify technologies used on any website at the click of a button.

inKin Social Fitness Platform - Compete with friends via various fitness trackers & apps