Salestools - Monitor your Linkedin newsfeed for keywords to obtain leads.
Watch2Gether - Watch2Gether is an app that allows multiple people to watch the same content simultaneously and interact with each other while watching.
Cato - Instant Spotlight-like search for your web browser.
Metastream - Watch streaming media with friends
PredictLeads - PredictLeads helps uncover sales triggers like B2B inside sales & personalized marketing, sales triggers, sales enablement.
StreamParty - StreamParty is a watch communiry, that allows you to watch video streams in sync with the people you care about, on multiple services.