There are many alternatives to Ultramon for Windows and since it's discontinued a lot of people are looking for a replacement. The best open source Windows alternative is Dual Monitor Tools. If that doesn't suit you, our users have ranked more than 10 alternatives to Ultramon and four of them are open source and available for Windows so hopefully you can find a suitable replacement. Other interesting open source Windows alternatives to Ultramon are Dual Monitor Taskbar, Displayflow and Wallpaper Manager.
Dual Monitor Tools is a software package for Windows users with dual or multiple monitor setups.
All the tools are open source and free, and each tool is independent so you only need to install or run what you want.
A taskbar for the second monitor. (Only tested on Windows Server 2008 R2 and Windows 7.)
Displayflow is a comprehensive, high-performance display management utility for Linux, designed to give users granular control over hardware settings and monitor brightness through both a Command Line Interface (CLI) and a background Hotkey daemon.
Wallpaper Manager is a wallpaper cycling and management tool especially designed for multiscreen systems.
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