Otter - Remember, search, and share your voice conversations
Netflix Party - Netflix Party is an extension for watching Netflix remotely with friends and family for movies nights with that long-distance special someone.
Plutoview - Shared browsing solution for remote group collaboration
StreamParty - StreamParty is a watch communiry, that allows you to watch video streams in sync with the people you care about, on multiple services.
Dead Simple Screen Sharing - Simple screen sharing and audio conferencing software.
Metastream - Watch streaming media with friends