Discord

Discord is an instant messaging platform that provides functionality similar to Slack and IRC, but also includes voice chat.

The LessWrong Discord server is located at https://discord.gg/eYqZMhm (easier-to-remember redirect: memeware.org/rationaldisco).

More details can be found in the LW post here.

Other networks

There is also another network for Slate Star Codex here

See also

• Slack
• Less Wrong IRC Chatroom