Top spacedesk Alternatives: Extend Your Display with Ease
Spacedesk is a popular multi-monitor display extension app that allows you to transform other devices and computers on your Local Area Network (LAN) into additional monitors for your Windows desktop. It requires a primary Windows PC running the spacedesk DRIVER software and a secondary device (Android, Windows, iOS, Linux, or HTML5 viewer) running the spacedesk VIEWER program. While effective, many users seek out a reliable spacedesk alternative for various reasons, including specific platform needs, advanced features, or simply exploring other options.
Best spacedesk Alternatives
If you're looking to expand your digital workspace, streamline multi-device control, or simply find a different approach to extending your display, these spacedesk alternatives offer a range of powerful solutions. Let's explore the top contenders.

Input Director
Input Director is a Windows-only application that excels at letting you control multiple Windows systems with a single keyboard and mouse. While not a direct display extension like spacedesk, it's a fantastic spacedesk alternative for users who need to manage several PCs seamlessly, offering features like keyboard sharing, mouse sharing, and even the ability to create macros.

Duet Display
Duet Display is a powerful commercial spacedesk alternative that turns your iOS or Android device into a second screen for your PC or Mac. It offers excellent performance for screen extension and mirroring, and even includes features like tablet pressure sensitivity, making it ideal for creatives.

Air Display
Air Display is a commercial solution that allows you to use your iPad, Android tablet, or even iPhone as a wireless display, extending your Mac or Windows desktop. Similar to spacedesk, it focuses on screen extension and mirroring, providing a convenient way to add more screen real estate.

iDisplay
iDisplay is a commercial spacedesk alternative that transforms your iPad, iPhone, or Android tablet/smartphone into a convenient side monitor for your Windows or Mac desktop. It supports multiple monitors, screen mirroring, and even offers USB tethering for a more stable connection, making it a versatile option for expanding your display.

Splashtop Wired XDisplay
Splashtop Wired XDisplay is a commercial tool designed to turn your iPad, Android tablet, Kindle, or smartphone into a high-performance extra monitor for your Mac or Windows computer. As its name suggests, it often leverages a wired connection for enhanced stability, offering excellent screen extension and mirroring capabilities.

Multiplicity
Multiplicity is a commercial Windows application that allows you to control multiple computers with a single keyboard and mouse, acting as a virtual KVM switch. While not a direct display extension like spacedesk, it's a powerful spacedesk alternative for managing multiple networked PCs, featuring keyboard and mouse sharing, clipboard sharing, and remote desktop capabilities.

x2vnc (win2vnc)
x2vnc (also known as win2vnc) is a free and open-source spacedesk alternative for Windows and Linux. It allows you to use two screens on two different computers as if they were connected to the same machine, acting as a VNC viewer to extend your desktop across systems, even with different operating systems.

TwomonUSB
TwomonUSB is a commercial spacedesk alternative that enables smart devices to become monitors by connecting them to a PC via USB. This offers a convenient and often more stable way to use your Android or iOS tablet/phone as a dual monitor for your Mac or Windows computer, focusing on reliable screen extension.

ZoneScreen
ZoneScreen is a free personal spacedesk alternative for Windows and Windows Mobile. It stands out because it not only mirrors your local desktop to another computer on the network but also allows for desktop extension, providing flexibility beyond simple screen mirroring.

Win2VNC
Win2VNC is a free and open-source spacedesk alternative for Windows. It functions similarly to x2vnc, allowing you to use two screens on two different computers as if they were one, and even supports cross-operating system functionality for seamless screen extension and mouse sharing.
Whether you prioritize wireless convenience, wired stability, cross-platform compatibility, or simply better performance for your specific setup, there's a spacedesk alternative here to meet your needs. Explore these options to find the best fit for extending your digital workspace and enhancing your productivity.