UltraVNC

UltraVNC is a free, open-source remote desktop software for Windows that lets you securely access and control PCs over the internet or local network. UltraVNC supports file transfer, chat, encryption plugins, NAT traversal, and an embedded JavaViewer for browser-based access, making it ideal for IT support, help desks, and remote assistance for individuals and businesses.

Founded in	2002
Location	🇧🇪 Belgium
Founders	Rudi De Vos

Features

Plans

FREE

◈Fully free under GNU General Public License (GPL) for UltraVNC and UltraVNC SC; non-GPL variants like PcHelpWareV2 and uvnc2me are also free.

◈Supports remote desktop access, file transfer, chat, encryption (plugin or built-in AES), NAT/NAT2NAT traversal, and service mode on Windows.

◈No pricing starts or ends; unlimited use without subscriptions or limits.

No paid plan available for this product.

Refund Policy

UltraVNC is free software and does not have a refund policy since no purchase is required.

Ratings

capterra(4.3/5)

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Ai Opinion

✦

AI Rating(4.3/5)

Users appreciate UltraVNC as a robust, free, and easy-to-use remote desktop solution with excellent compression algorithms that work well on slow connections. The software is praised for its stability, low latency, simple installation, and file transfer capabilities. However, some users report occasional connection issues, configuration complexity, and display setting quirks. The Single Click version is particularly valued for its ease of deployment to non-technical users without licensing concerns.

Expert Opinion

✎

Expert Rating(4.3/5)

I recently tested UltraVNC, a free remote desktop tool with a strong focus on open-source flexibility and Windows support. Here is my detailed review based on practical usage and research:
UltraVNC shines for quick remote access over networks, supporting file transfer, chat, and even NAT setups via repeater. I set it up easily on Windows 10 and 11 machines, connecting smoothly for IT help sessions without any cost.
The single-click client was a standout; clients just run it and share an access code, no complex installs needed. It handled poor connections better than expected with good compression, making support efficient for help desks or personal use.
Features like service mode for unattended access and plugin encryption add power for pros. The interface feels dated but works reliably, and broad OS compatibility from XP to Server 2025 covers most needs.
One gripe is occasional glitches on slow links needing screen repaints, and it's less polished than paid rivals like TeamViewer. Still, for free VNC power, it's hard to beat.