UltraViewer 6.6.127 for Windows

UltraViewer 6.6.127 is a free remote desktop program for Windows, developed by DucFabulous. It lets you see and control another computer over the internet, which is handy for helping a friend or a customer, and you can download it from the official UltraViewer website.

Specifications

What it does

Remote desktop software shows you the screen of another computer and passes your mouse and keyboard to it. UltraViewer is built for exactly the kind of support most people need: a relative cannot find a setting, a colleague has an error message, or a customer needs help installing a program. Both sides run UltraViewer, the person who needs help reads out their ID and password, and the helper connects. From then on the helper works on the remote screen as if sitting in front of it, while the other person watches everything that happens. Because the program is small and runs on many Windows versions, including old ones, it is often chosen for quick sessions on computers that are no longer up to date. According to the developer's FAQ, it runs only on Windows, and a macOS version is planned for the future.

How to install it

1. Open the official download page and get the installer.
2. Install the program on both computers.
3. On the computer that needs help, share the ID and password shown in the window.
4. On the helper's computer, enter them and connect.
5. End the session when the job is done.

New releases are described in the UltraViewer changelog, and compatibility questions are answered in the support centre.

Tips for smooth sessions

Agree on a time before connecting, so the person on the other side is at the computer and can confirm access. Close private documents and email before the session starts. A wired or stable Wi-Fi connection on both ends makes the picture and mouse far more responsive, and lowering the screen resolution on the remote PC can help on slow links. When the job is finished, explain what you changed, so the other person can repeat it next time without calling you again.

Security

Remote access tools are a favourite of phone scammers who pretend to be bank or tech support staff. Only share your ID and password with someone you know and contacted yourself, never with a caller who contacted you. Watch the screen during the session, close the program afterwards and change the password if you are unsure who saw it.

Pros and cons

• Pro: small and quick to set up.
• Pro: works on old versions of Windows.
• Pro: free.
• Con: Windows only.
• Con: fewer features than larger remote desktop suites.

Alternatives

Our listings include AnyDesk and TeamViewer, both remote desktop programs, and Tailscale, which links your own devices into a private network.