XYMultiChat
by SummerRecall
XYMultiChat sorts incoming chat messages into separate windows according to rules that each window applies to the text of a message.
What it does
Each message is checked against the rules set for every window, and matching lines are shown in that window rather than the main chat. The mod provides up to 5 additional windows, and each one can be given its own rules. Rules support plain keyword matching, several keywords joined by a vertical bar where one match is enough, prefix matching for channel tags at the start of a line, and exclusion matching that keeps lines out of a window.
Window width, height and position can be changed by dragging, and the chat bar can be adjusted from the same settings. The mod is a client-side only Fabric mod for 1.21.8, so only the player's game needs it, and multiplayer servers are unaffected. Mod Menu is required to open its settings, and the source code is public under the MIT License, which makes it open source.
Key features
Rule-based windows
Chat messages are sorted into separate windows based on rules the player sets for each window.
Up to five extra windows
Five additional windows can be created, each with its own rule set and its own size and position.
Keyword and prefix rules
Rules can match a keyword, several keywords separated by a vertical bar, or the start of a message, such as a channel prefix.
Exclusion rules
Messages that contain a specified term are kept out of a window, so the window only shows what remains.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Use cases
Multiplayer channels
Players on multiplayer servers can keep messages from a channel prefix in their own window, away from general chat.
Trade and help chat
Keyword rules can route lines that mention a trade or help request into a separate window the player watches.
Who it’s for: Players who follow busy multiplayer chat and want messages split by content or channel. The mod is client-side, so server owners do not need to install it.
How it compares
Advanced Chat Filters Reboot is also client-side only and open source, under the Mozilla Public License 2.0, but targets 1.21.10 – 1.21.11 rather than 1.21.8. Copy That is client-side only, not open source, under All rights reserved, and covers 1.21 – 1.21.10. Loading Window is client-side only and open source under the MIT License, but only for 1.18 – 1.20.4.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| XYMultiChat | Fabric | 1.21.8 | Client-side only | 2025-12-13 |
| Advanced Chat Filters Reboot | Fabric | 1.21.10 – 1.21.11 | Client-side only | 2026-06-12 |
| Copy That | Fabric | 1.21 – 1.21.10 | Client-side only | 2026-03-28 |
| Loading Window | Fabric | 1.18 – 1.20.4 | Client-side only | 2024-03-30 |
Questions
Does XYMultiChat need Mod Menu?
Which loader does XYMultiChat use?
Does a server need XYMultiChat installed?
How many chat windows can be added?
In the catalog
XYMultiChat is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 17,695 mods support Minecraft 1.21.8.
Similar mods
What the author says
A chat categorization mod suitable for multiplayer servers. This mod allows you to sort chat messages into different windows based on custom rules. It provides up to 5 additional windows for you to configure. In the configuration, you can adjust the rules for specific windows. You can customize the width and height…
Official listing
- Modrinth page
- modrinth.com/mod/xymultichat
- Owner
- SummerRecall
- Published
- 2025-12-13
- Updated on Modrinth
- 2025-12-13
- Facts verified
- 2026-10-15