[Note] Pidgin on ubuntu

Pidgin to use with whatapp, skype, slack, discord, telegram:

sudo apt-get install pidgin

Discord, sudo apt-get install purple-discord
Telegram - it didn't work for me, sudo apt-get install telegram-purple


Whatsapp, Skype, Slack plugin need to be compiled and need additional packages to do so:
sudo apt-get install pidgin-dev libpurple0 libpurple-dev libpurple-bin libgtk2.0-dev libprotobuf-dev libjson-glib-dev libxml2-dev

Whatsapp, https://github.com/hoehermann/purple-gowhatsapp
Skype, https://github.com/EionRobb/skype4pidgin
Slack, https://github.com/dylex/slack-libpurple


Other plugins, https://developer.pidgin.im/wiki/ThirdPartyPlugins