Messenger
Socket.IO, Java Socket Messenger, Javescript Websocker,
VoIP; Drupal Chat (Drupal); HTML5 web socket, Client server
chat C++, Lara social, Laravel Echo (Laravel)
SDKs
Social network SDKs, Apple SDKs, Laravel Socialite, Spring
Social
Chatbot development
WotNot, BotMan, Chatfuel Amazon Lex, Botsify, FB Messenger
Platform, Telegram Bot API
Technologies
NodeJS, PHP frameworks, .NET, Python, JAVA, C, C++