Windows companion · Local-first

Host smoothly.
Stay in the moment.

Phrases, turn orders, skip countdowns, and lightweight overlays—built to keep 3DX hosts organized without modifying the game.

Latest stable release Windows 10/11 · x64 SHA-256 included
3DX Hosting Companion
3DX Hosting Companion Local phrase library 3DX detected
Turn / Skip Phrase Overlay Turn Order Room Files
Hosting modeGame HostVenueGreeter
Phrase editorImport from PhraseExpress

Phrase content

Welcome
/me welcomes everyone to tonight's game.
Olympus

Behavior

!welcome
After space

3DX chat preview

21:42

YourName welcomes everyone to tonight's game.

CopySend to 3DX
Phrase Overlay
WelcomeRulesResults ›
Turn / Skip
Ankh Peach Luna
PauseResume
External companionNo injection or game modification
Local-firstYour phrases stay on your PC
Verified downloadsEvery installer includes SHA-256
Built-in updatesSimple verified update flow
Everything within reach

A calmer way to host.

Prepare in the client, then keep only the controls you need over the game. Every surface is compact, movable, and designed around a live hosting session.

Phrase library that scales with you

Organize phrases by folder, search instantly, link outcomes, import from PhraseExpress, and preview exactly how messages will read.

Olympus 12Game Night 8General 5

Turn order, without friction

Add players with Enter, drag to reorder, track statuses, randomize, and send polished player or turn lists.

1 Ankh Playing2 Peach AFK3 Luna Playing

Overlays that stay out of the way

Separate Phrase and Turn / Skip overlays remember their size, position, and opacity—and hide when another app has focus.

Phrase Overlay · switch folders in place
WelcomeRulesRolls ›

Clicks or quickbinds. Your choice.

Send with a button or assign global shortcuts in Quickbind Mode. Commands can also expand while you type in 3DX.

Ctrl+Shift+1Welcome message

Skip countdowns that stay controlled

Select a player, choose five or ten seconds, and send a clear countdown while the app protects the mouse sequence.

Peach skips in54321

Accounts only when you want one

Continue with Google or Discord only if you want optional cloud backups, Friends, or experimental Co-Hosting. Co-Hosting is currently wholly untested in a real two-user session and needs feedback.

GoogleorDiscordLocal mode always available
Simple by design

From setup to send in three steps.

01

Build your library

Create folders for boards or events, add phrases, import existing PhraseExpress entries, and set optional commands.

02

Place your overlays

Open the Phrase and Turn / Skip overlays, resize them, choose opacity, and place them around your play field.

03

Host without alt-tabbing

Send phrases, turn lists, Pause or Resume messages, and countdowns while keeping the game visible.

Local by default

Your hosting data stays yours.

No account is required. Cloud backups are optional, require Google or Discord sign-in, and run only when you press a backup button. Transfers use HTTPS encryption and private backup objects use Cloudflare-managed encryption at rest.

Read the privacy policy →

No automatic uploadsSigning in alone never sends phrases or Room Files.

No forced accountEvery local tool works while signed out.

Byte-safe Room FilesChecksum-verified without parsing or rewriting.

Protected cloud storageEncrypted in transit and at rest.

Good to know

Before you install.

Is this a 3DX mod?+

No. It is an external Windows companion. It does not inject into, patch, or modify 3DXChat.

How does sending work?+

The app detects the visible 3DX chat input and uses brief Windows mouse, clipboard, and keyboard simulation. Your cursor is restored after sending.

Why might Windows show a warning?+

The application is not yet code-signed. Download only from this official release repository and verify the included SHA-256 checksum if desired.

Do I need a Google or Discord account?+

Only for optional cloud backups and Friends. Every local hosting feature remains available while signed out or offline, and signing in does not upload anything until you explicitly start a backup.

What does adding a friend share?+

Nothing automatically. Friends can currently see one another’s display name and avatar. Phrase, Room File, and co-host sharing will require explicit actions when those features are introduced.

Is Co-Hosting ready for normal use?+

Not yet. Version 0.7.0 is a wholly untested first pass that requires two accepted friends. Please treat it as experimental, avoid relying on it for important sessions, and provide detailed feedback about connection, synchronization, sending, and turn-order behavior.

Are cloud backups encrypted?+

Yes. Transfers use HTTPS/TLS encryption and private backup objects are encrypted at rest by Cloudflare R2. Access requires an authenticated Companion account. This is managed cloud encryption, not end-to-end encryption with a user-held key, so no online service can honestly promise that theft is impossible.

Does it support Venue Host or Greeter mode?+

Venue Host and Greeter are visible in the Hosting Mode switcher as future modes, but neither is included in the current release.

Ready when you are

Make the next session easier.

Download the latest Windows installer and keep the controls that matter close at hand.

Independent development

Enjoying the Companion?

If it makes hosting easier, you can support continued development on Ko-fi.

Support on Ko-fi