Slackmojis - A directory of the best custom slack emojis
CallHippo - Easy to use Phone System with World-Class Support
Mojirater - Emoji reactions & social share buttons for your site
Callmama - Get cheap international calling, international virtual number, Call Mama Gives an added advantage to send message and make calls to non-user of Callmama App.
Keybase for Chrome - A secure chat button for every profile
KrispCall - Virtual cloud phone system for business