Google Duo - Google's answer to Facetime, high-quality video calling on iOS and Android.
Tinfoil for Facebook - Download Tinfoil for Facebook app for Android. Tinfoil for Facebook is for those users that require a Tinfoil hat. .
GoRemote - A free & simple yet powerful European based solution to go remote. Video & audio conferences, screen sharing & chat with end to end encryption. Keep your team close and productive
Frost for Facebook - Frost is a third party Facebook wrapper geared towards design and functionality
Around - Find people to hang out with.
Friendly for Facebook - Friendly is the most complete Facebook Lite and FB Messenger alternative.