Founders Nation - Find or become a startup cofounder
TeamLink - TeamLink is one of the leading and sumptuous solutions that is making web and video meetings extremely easy and efficient.
CoFoundersLab - Meet 250,000+ entrepreneurs online
Around - Find people to hang out with.
Findnlink - Find people to work with on your ideas.
Google Duo - Google's answer to Facetime, high-quality video calling on iOS and Android.