Download UltraVNC for free. This program allows you to remotely control computers over a network or the internet. Use a mouse, keyboard, send files, and chat with the remote device. Ideal for remote computer support, with direct link access.

What is UltraVNC?

UltraVNC It's an open-source remote desktop program that uses VNC and the Remote Frame Buffer (RFB) protocol to display the screen of another computer over a network or the internet, allowing control with a mouse and keyboard from your own computer as if you were sitting in front of the other computer. The program divides the work into a Server for the computer needing access and a Viewer for the connected computer, making it suitable for troubleshooting, maintaining, or accessing computers located in different locations. If you're familiar with... Anydesk The workflow is similar, but UltraVNC allows for more granular configuration of connection options and server-side components.

The Viewer side offers a fairly comprehensive set of practical options, such as View Only for viewing the screen without mouse or keyboard input, Auto Scaling for scaling the image to fit the window, Full Screen, and the ability to select a single window or the entire desktop. Additionally, it allows you to use Ctrl+Alt+Del to refresh the screen and adjust connection settings from the Viewer menu during a session. The Tabbed Viewer allows you to open multiple connections in a single window, making it easier to switch between managed machines without opening separate full-screen windows.

UltraVNC also features File Transfer for sending files or folders between two machines with data compression during transfer, as well as Quick Chat for communicating with the remote end without needing an additional chat app. The connection supports DSM plugins for data encryption, and it works with RealVNC, TightVNC, and many other VNC implementations that use the same standard. This is very useful when the environment does not use a single software on every machine. These functions make UltraVNC not just for viewing screens, but quite flexible for remote support, file transfer, and managing multiple machines from a single point.

Key Features

Remote Control. Connect and control a remote computer using a mouse and keyboard via VNC.
VNC Compatibility. Compatible with RealVNC, TightVNC, and other VNC applications that use the same standard.
View Only Mode. There is a View Only mode for viewing the screen without sending mouse or keyboard commands.
Auto Scaling. Adjust the image using Auto Scaling to fit the Viewer window size.
Full Screen Support. Switch to full screen to utilize the entire screen area for remote control tasks.
Window Selection. You can choose to view only the desired window or the entire desktop of the target device.
File Transfer. Send files and folders between devices using File Transfer with data compression.
Quick Chat. There is Quick Chat for sending messages between the viewer and the server.
DSM Plugin Encryption. Supports DSM Plugin for adding encryption to connections.
Key Combinations. You can send the Ctrl+Alt+Del command to the target machine from the Viewer.
Session Options. Refresh the screen and adjust connection options between sessions.
Tabbed Viewer. Tabbed Viewer allows you to open and switch between multiple connections in a single window.
MS Logon Authentication. Support MS Logon authentication. Use a Windows account or a group of users to set access to the destination device.
Multi-Monitor Support. Support for multiple screens You can choose to view the desired screen from the terminal with more than one screen.
Repeater Functionality. There is a repeater to help connect via firewall or NAT in case it can't connect directly between the two.
noVNC HTML5 Viewer. Novnc Viewer is available to view and control the terminal from a web browser without having to install an additional Viewer.

System Requirements

Supported OS. Supports Windows 11, Windows 10, Windows 8.1
RAM Requirements. 2 GB RAM (4 GB or more recommended)
Disk Space. 200 MB or more for installation

What's new

Version 1.8.3.2

Viewer-side security updates
Precision wheel extension. Adjust the scrolling with the mouse wheel to be more accurate.
Fixed a bug with mismatched buffer lengths when creating folders between client and server.
The Viewer can now cancel file transfers sent from the Server to the Viewer.
Patched WebSocket overflow and File Transfer root vulnerabilities, and deprecated MS-Logon II.
View Only clients can no longer write to the Server's clipboard or change screen resolution.
Repeater: Performs exact IP matching in the allow-list instead of just comparing prefixes.

What's new