Awesome
discord-rs 
This project is only maintained occasionally. If you're having problems, open a pull request or check the network graph for up-to-date forks.
discord-rs is a Rust client library for the Discord chat client's API.
The Discord API can be divided into three main components: the RESTful API to which calls can be made to take actions, a websocket-based permanent connection over which state updates are received, and the voice calling system.
Log in to Discord with Discord::new, new_cache, or from_bot_token as
appropriate. The resulting value can be used to make REST API calls to post
messages and manipulate Discord state. Calling connect() will open a
websocket connection, through which events can be received. These two channels
are enough to write a simple chatbot which can read and respond to messages.
For more in-depth tracking of Discord state, a State can be seeded with
the ReadyEvent obtained when opening a Connection and kept updated with
the events received over it.
To join voice servers, call Connection::voice to get a VoiceConnection
and use connect to join a channel, then play and stop to control
playback. Manipulating deaf/mute state and receiving audio are also possible.
For further details, browse the source or read the documentation. For examples, browse the examples directory.
Installation
On Windows, discord-rs currently requires a GNU-like environment. For details, read the installation guide.
On all platforms, discord-rs has several system dependencies, which should be installed as appropriate:
pkg-configopenssllibsodium(if using voice)opus(if using voice)ffmpeg(if using ffmpeg features)youtube-dl(if using youtube-dl features)