TwomonUSB

You can create dual monitors quickly and easily using a USB.

20 Alternatives To TwomonUSB

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AirParrot

AirParrot is an interesting piece of software that allows you to view content from your Mac desktop through your television set if you have an Apple TV that can act as a bridge between the two devices.

Astropad

Astropad is a free form drawing tool designed from the ground up to take advantages of the features offered by an iPad.
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Duet Display

With Duet Display, you can transform your iPhone or iPad into a second display to expand the screen space of your PC or Mac system.
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Input Director

Control multiple windows systems with one keyboard/mouse. Share a keyboard and mouse across multiple windows system.

Mini Mouse Macro

A free light weight mouse macro that records mouse movements, clicks and keyboard entries.

Mountie+

Connect a second (or third) screen to your laptop
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Mouse Broadcaster

Mouse Broadcaster is used to duplicate mouse and keyboard actions to multiple PCs on a network.

Multiplicity

Multiplicity enables a user to control multiple computers with one keyboard and mouse.

Razer Synapse

Razer Synapse is unified configuration software that allows users to rebind controls or assign…

ShareKM

Control your Droid from your desktop with MOUSE and KEYBOARD.
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ShareMouse

With its easy setup and high level of versatility, ShareMouse is a great tool if you’re looking to use a single mouse and keyboard across multiple computers.

Splashtop Remote Desktop

Splashtop is the next generation remote access, remote support, and collaboration solution.
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Splashtop Wired XDisplay

Use Splashtop Wired XDisplay to turn your iPad, Android tablet, Kindle or smartphone into a high-performance extra monitor for your computer.
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Synergy

Project management & accounting for AEC professionals

SynergyKM

SynergyKM is a GUI wrapper around the synergy command line tool that lets you easily share a single…

Ultramon

UltraMon is a piece of software built to help with the management of multiple screens on the same computer system. Without software like this, taking full advantage of an expanded desktop space can be difficult.
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Vinpok Split

Best on-the-go touch screen monitor

across

Across makes a Bluetooth equipped PC or Mac work as a standard Bluetooth keyboard/mouse combo.

iDisplay

iDisplay is an app that turns a mobile device into a secondary desktop monitor. The app currently supports iOS, Android, Windows and MacOS, and it lets users connect a desktop computer to a mobile device over WiFi.
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spacedesk

spacedesk expands the Windows desktop computer screen to other computers over the local area…