Myself and DC are in here, we have a CS2D Official channel, and a "remake" channel for any chat about the remake of CS2D I am developing. I invited him here as I've always had some issues with several IRC client's myself.
Discord can be used for both text and voice chat, both are popular, it can also be used from your browser and you can download a desktop client if you prefer that.
Please do not bother DC, as I am sure he's very busy, that would include me although I don't mind anybody talking to me while we're in the holidays, as I'd like a healthy discussion of both official CS2D, and the remake. - Same goes to Moderators/Admins, please do not bother them where it is unnecessary!
Feel free to use the voice channel(s), I'll add more when necessary. There is an IRC on QuakeNet for #unrealsoftware - but considering Discord is getting popular these days this isn't a bad idea.
To moderators: I will assign moderator/admin status to you if you join!