CrossDesk

A lightweight, cross-platform remote desktop for computers, browsers, and iPhone / iPad.

Website · Download · Open Web Client · 中文

CrossDesk connects Windows, macOS, and Linux desktops, with browser and native iOS clients for controlling computers. Built on MiniRTC, it supports real-time video and audio, keyboard and mouse control, file transfer, and self-hosting. The project is under active development.

This guide follows the current repository source. Desktop screenshots render the current Slint UI with sample IDs, passwords, online statuses, and recent devices; thumbnails show public pages. Check each release's notes for the features and requirements of its binaries. Native iOS build and signing instructions are below.

Preview · Download · Quick start · Session controls · Settings · iOS · Self-hosting · Build · FAQ

Preview

Desktop client

The main window brings together your device ID, connection password, remote connection entry, and recent devices.

Web client

Enter a remote device ID and password in your browser without installing the desktop app on the controlling device.

See the screenshot notes for image sources and refresh instructions.

Features

Capability	Current support
Cross-platform control	Windows / macOS / Linux desktop control; browser and native iOS controllers
Live video and audio	H.264 / AV1, 30 / 60 fps settings, hardware codec options, and remote audio; availability depends on hardware and build configuration
Devices and displays	Recent connections, device aliases, session tabs, and remote display switching
Input and sharing	Keyboard/mouse input, remote cursor synchronization, shortcuts, text clipboard synchronization, and file transfer
Networking and deployment	Direct P2P connections, TURN relay, SRTP media encryption, and self-hosted signaling/relay services
Windows protected desktops	CrossDesk Service forwards input on lock screens, sign-in screens, and secure desktops
Linux headless operation	Reuse existing desktops and applications or create separate Xvfb desktops, with capture and input; see setup

Controls and capabilities vary by client. Desktop controls are described below; see the iOS guide for native mobile features.

Download and install

Choose a package matching your OS and CPU architecture from GitHub Releases or the website.

Platform	Current source / CI baseline	Installation
Windows	Windows 10+, x64	.exe installer; portable builds are also supported
macOS	macOS 14.0+, Intel / Apple Silicon	x64 or arm64 .pkg
Linux	Ubuntu 20.04+, amd64 / arm64, glibc 2.31 baseline	.deb package
iOS / iPadOS	iOS 16.0+, arm64 physical device	Native controller; build and sign with Xcode, or sign the unsigned CI app
Web	A WebRTC-capable browser	Open web.crossdesk.cn

On Linux, replace the example filename with the downloaded package name:

sudo apt install "./crossdesk-linux-amd64-<version>.deb"

First launch on macOS: follow the app prompts to grant Screen Recording (called Screen & System Audio Recording on newer systems) and Accessibility under System Settings → Privacy & Security. Reopen the app if prompted. These permissions allow desktop capture and remote keyboard/mouse input respectively.

Quick start

Connect from another computer

1. Prepare the host. Install and run CrossDesk on the computer to control. Wait for the bottom status bar to show that the server is connected. Share the Local ID and Password shown under Local Desktop with the controller.
2. Enter the remote ID. On the controlling computer, enter the host's ID in Remote Desktop → Remote ID, then click →.
3. Verify the password. Enter the host's current connection password when prompted and confirm. Select Remember password if you want to save it.
4. Reconnect later. Previously connected devices appear under Recent Connections. Reconnect from a card, edit its alias, or remove its record.

The eye button shows or hides the local password; the pencil button changes it. Use 6 ASCII letters or digits and stay connected to the server while changing it. Wait for the change to succeed and the client to reconnect, then copy the current password. Controllers that saved the old password must enter it again.

Connect from a browser

1. Keep CrossDesk running and connected to the server on the host computer.
2. Open the Web Client, enter the Remote Device ID and Password, and click Connect.
3. Use the page's display, mouse-mode, and keyboard controls during the session. Phone and tablet browsers can also connect.

For self-hosting, connect both sides to the same service. Browser deployment is documented in CrossDesk Web Client.

Session controls

Switch devices using session tabs. Expand the control bar if it is collapsed, and hover over icons to see their tooltips.

Control	Action
Display	Switch the remote monitor
Keyboard	Send shortcuts; Windows Ctrl+Alt+Del requires the remote service
Mouse	Enable / release remote mouse control
Speaker	Play / mute remote audio
Folder	Select a file to send and view transfer progress
Network statistics	Inspect traffic, packet loss, frame rate, resolution, and direct / relay mode
Fullscreen	Enter / exit fullscreen
Disconnect	End the current remote session

Desktop clients synchronize text clipboard contents. Configure the receiving directory under Settings → File Save Path. Closing the main window hides it and keeps the app running; use the system tray or menu-bar exit command to quit completely.

Video and connection settings

Open ☰ → Settings in the top-right corner and click OK to save. Configure the session before connecting; some settings are disabled during an active session. Scroll down for self-hosting, startup behavior, and the file save path.

Setting	Purpose
Video Quality / Video Capture Frame Rate	Low, medium, or high quality and 30 / 60 fps; actual performance depends on the connection and device
Video Preference	Choose frame-rate priority, quality priority, or balanced adaptation
Video Encode Format	H.264 / AV1; hardware codec availability depends on the platform, device, and build options
Enable TURN Service	Allow relay-assisted connections; check this setting if P2P fails
Self-Hosted Config	Set the host, signaling port, and TURN port, then enable the checkbox
Auto Start / Enable Daemon	Configure startup and process supervision; restart as indicated by the UI
File Save Path	Choose where received files are saved

Native iOS / iPadOS client

apps/ios contains a native controller using the same MiniRTC protocol as the desktop client. It controls remote computers; it does not expose an iPhone or iPad as a remotely controlled desktop.

1. Follow the iOS guide to build and sign the app with Xcode, then install it on an iOS 16+ physical device.
2. Enter a remote ID on the home screen, connect, and enter its password. Successful connections become available in the recent devices list.
3. Choose a mouse mode in Settings: Relative Position works like a trackpad; Absolute Position maps touches directly to the remote screen.
4. Tap the floating icon to expand the menu, then switch displays, open the keyboard, toggle audio, or send files. Received files are stored in Documents/Received and can be exported using the share button beside the transfer status.

The app currently receives remote text into the iOS clipboard. Its UI does not yet expose a button to send the local clipboard.

Gestures include one-finger click, two-finger right-click, long-press drag, and pinch-to-zoom. When zoomed in, two-finger panning moves the viewport. The native and browser clients are maintained separately, so their controls and gestures may differ. The current native UI uses Chinese labels.

Windows lock screens and sign-in

CrossDesk Service (CrossDeskService) reports protected desktop states and forwards Ctrl+Alt+Del, keyboard, and mouse input on lock screens, sign-in screens, credential prompts, and secure desktops.

The installer registers an on-demand service. CrossDesk tries to start it on launch, and the service exits when no local CrossDesk client is running. Portable builds offer service installation in the prompt or Settings → Lock Screen Service, with administrator privileges. The service depends on a running client.

Manual deployment and service commands

Keep the complete installation directory. For manual deployment, place CrossDesk.exe, crossdesk_service.exe, crossdesk_session_helper.exe, and all .dll files from the same build together. Open an administrator PowerShell in that directory and run the commands you need:

.\CrossDesk.exe --service-install
.\CrossDesk.exe --service-start
.\CrossDesk.exe --service-status
.\CrossDesk.exe --service-ping
# Stop or uninstall the service
.\CrossDesk.exe --service-stop
.\CrossDesk.exe --service-uninstall

If Remote Windows service unavailable appears, check installation and service status on the host. Ordinary desktop connections remain available, while control of protected screens is limited.

Self-hosting

Host your own signaling and TURN services, then enter their connection details under ☰ → Settings → Self-Hosted Config. Enable the same server configuration on both the controller and host.

• Self-hosting guide: current Compose deployment, client settings, certificate trust, and troubleshooting.
• CrossDesk Server: server source and release configuration.
• CrossDesk Web Client: browser source and deployment instructions.

Development and feedback

• Build from source: Windows, macOS, Linux, optional flags, and packaging.
• iOS development: native build and physical-device checks.
• GUI architecture: desktop UI and platform organization.
• FAQ: connection failures, blank video, received files, and build issues.
• Report an issue: include both operating systems, client versions, connection mode, and reproduction steps.

Acknowledgements and license

Thanks to HelloGitHub, Ruanyf Weekly, and the LinuxDo community for featuring CrossDesk and contributing feedback.

CrossDesk is licensed under GPL-3.0. See the Privacy Policy.

The Windows packages bundle the unmodified USB Mobile Monitor virtual display driver (usbmmidd_v2) by Amyuni Technologies for hosts without a monitor; its license is in usbmmidd_v2\License.txt in the install directory.

Code signing policy

CrossDesk uses SignPath.io to sign official Windows releases built from this repository.

Free code signing provided by SignPath.io, certificate by SignPath Foundation.

• Committers and reviewers: kunkundi
• Approvers: kunkundi