Unified Messaging API for .NET by CloudRail provides the possibility to programmatically send and receive messages via messaging services.
This interface includes Facebook Messenger, Line, SlackBot, Telegram, Viber.
Get a free license key at: https://cloudrail.com
Demo version of SlackConnector initiates an open connection between you and the Slack api servers. SlackConnector uses web-sockets to allow real-time messages to be received and handled within your application.