ChatSphere

ChatSphere

A modern instant-messaging chat mod for Minecraft 1.21.1 (NeoForge & Fabric) and 1.20.1 (Fabric). Replaces vanilla chat with channels, private messaging, emoji, voice rooms, and a full GUI.

Works on the client side — in singleplayer or on vanilla/plugin servers (with "Allow Vanilla Connection" enabled, then restart), it runs in local storage mode. On NeoForge or Fabric servers, install on both sides for channel sync, private messaging, and voice chat.

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Features

Channels — Create public or private channels with invite codes, display names, descriptions, and explore visibility. Browse all public channels from the Explore screen.

Private Messaging — Click any player name in the member list to start a DM. /msg and /tell are also supported.

Command Console — Switch to console mode to run commands directly in the chat interface. Output appears in-session. Arrow keys recall history.

Emoji Picker — 349 emoji from twemoji with category tabs, search, and :shortcode: autocomplete.

Voice Chat — Dual integration with Simple Voice Chat (isolated groups) and PlasmoVoice (broadcast lines). Works with either or both; auto-detected at runtime.

Chat Search — Filter messages in the current conversation. Match count and jump navigation included.

Quote Reply — Right-click any message to copy or quote-reply with context.

Anti-Spam — Duplicate messages collapsed automatically. Configurable server-side.

Member Management — Per-channel admins, mute/unmute, kick, invite system, and ownership transfer.

Full Settings GUI — Dark theme, bubble color and corner radius, per-type notification sounds, icon flash, screen popups, avatar cache, and more.

Server Configuration — In-game config screen for operators. Also available as config/chatsphere-server.json.

No Chat Reports Compat — NCR security status displayed directly in the UI.

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Controls

Key	Action
T	Open chat GUI
/	Open chat in command mode
F7	Open settings

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Configuration

Client — press F7

Tab	Options
UI	Timestamps, sender name, avatar, dark theme, preserve input, right sidebar, channel toggle
Bubbles	Own/other color (ARGB), corner radius
Skin	Avatar cache toggle, custom API URL
NCR	NCR compatibility toggle, safety status display, preventsChatReports setting (when No Chat Reports is installed)
Behavior	Chat history limit, scroll limit
Sound	Master toggle, @mention / whisper / system / public sounds, screen popup

Server — config/chatsphere-server.toml

Option	Default	Description
Anti-Spam	true	Collapse duplicate messages
Max Chat History	200	Messages stored per conversation
Enable Channels	true	Toggle the channel system
Explore Enabled	true	Public channel discovery
Explore Min Members	2	Min members to appear in explore
Backup Interval	30 min	Server data backup frequency
Prevents Chat Reports	true	Advertise preventsChatReports in server status (NCR section in client UI)

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Storage

ChatSphere/
├── client/singleplayer/<world>/
├── client/multiplayer/<server>/
└── server/
    ├── channels.json
    └── backups/

Server data auto-backs up every 30 minutes (configurable).

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FAQ

Does the mod need to be on the server? It works on the client alone in local mode. Install on both sides to unlock channel sync, private messaging across players, and voice chat.

Which voice chat mods are supported? Simple Voice Chat and PlasmoVoice. Both work simultaneously if installed.

How do I join a channel? Use the → button and enter an invite code, or browse public channels from the Explore screen (search icon next to →).

How do I create a channel? Click + next to the Channels header, or type #name in the input and press Enter.

Where is my data stored? Client data in ChatSphere/client/ per world/server. Server data in ChatSphere/server/.

Can I use this in a modpack? Yes.

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Commands

Command	Description
/chatsphere help	Show help
/chatsphere list	List all channels
/chatsphere info <name>	Channel details

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License

GNU LGPLv3

Emoji by twemoji (Twitter / CC-BY 4.0).