Join community
open-source project · GPL-3.0-or-later · uvnc.com

UltraVNC

Windows-native VNC.

UltraVNC is an open-source VNC server and viewer for Windows, licensed under GPL-3.0-or-later. It includes file transfer and text chat. The latest release listed in this page’s spec card is 1.8.3.0, released in September 2026.

  • Good for: personal Windows projects and home labs that need file transfer or chat, with an operator handling authentication, exposure and updates.
  • Consider RealVNC Connect when: your business depends on remote access and you need end-to-end encryption, centralised management and commercial support.

Where it is strong

Where it stops

  • Windows only. Both the server and viewer are for Windows; there are no macOS or Linux builds. UltraVNC downloads.
  • UltraVNC encryption is optional through a configured DSM plugin. The server default is no DSM plugin. UltraVNC SettingsManager.cpp.

Get UltraVNC

The server runs on the computer whose screen you want to view. The viewer runs on the computer displaying that screen. UltraVNC provides both for Windows. UltraVNC downloads.


Helpdesk components

UltraVNC components

In the helpdesk pattern, Single Click runs on the end user’s computer as the server. The helpdesk uses the viewer. UltraVNC Single Click documentation describes those roles.

Read Security and remote access best practices before configuring a connection.

How it compares

Project help: UltraVNC upstream tracker or the UltraVNC Forum.
Questions about an UltraVNC setup? The community’s Using VNC Technology group covers setup and troubleshooting, and Security and Remote Access covers safe exposure patterns.

Sources accurate as of 30 September 2026.

Open-source VNC suits personal projects and home labs. When your business depends on remote access, RealVNC Connect adds end-to-end encryption, centralised management and commercial support from the team that created VNC.

Start a free trial ↗ See plans and pricing ↗ Download RealVNC Connect ↗

On this page