Can anyone help me to add chat option of discord on forum?

[merefield (Robert)]

You can configure Discord login in settings, so users can use their Discord credentials to login to your Discourse:

Configuring Discord Login for Discourse

The latest version of Discourse supports authentication via Discord. Combining Discourse and Discord is a great way to combine the real-time features of chat with the ‘long term memory’ of a Discourse forum. You can read more about this on our blog. Once enabled and configured, login with Discord will appear alongside the other login methods for your forum: [42] Configuration To get started, head over to Discord developer portal and create a new application. Choose a name, icon and descript…

You can add this TC:

Discourse Discord Widget

[banner] This component is based on the work of Daniela (@dax)'s post here and packages the information into an easily installable theme component. Overview This theme component allows you to add a Discord widget to your Discourse forum. Configuration & Setup For details on how to setup this theme component read here. Code Repo Install Theme Component

You can even run a bot from your Discourse server:

Discord Bot Construction Kit

Purpose of this plugin This plugin does several things: Allows you to power a Discord bot using your Discourse server to do stuff to link the two systems. Fork this repo and expand it with simple Ruby to create all kinds of bot functionality. Existing functionality to serve as examples and useful utility: Provides some two-way auto posting of content that meet some criteria. Command to copy messages ad hoc to Discourse Command to sync group membership to role membership of your Disco…