Apps similar to TwomonUSB include Spacedesk, which has a free version. Other options are Side Screen, Deskreen, Tab Display and Weylus. You can choose from more than 10 Screen Mirroring Apps like TwomonUSB for Mac, Windows, iPad, Android and iPhone.
Utilize Spacedesk to transform any network-connected device, from Android tablets to iOS devices, into additional monitors. Requires a Windows primary machine for efficient screen sharing, perfect for office or remote collaboration.
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Transforms any Android tablet into a Mac's second monitor using USB-C for low latency or WiFi with QR pairing, featuring H.265 hardware streaming, touch input, HiDPI support, lightweight design, Gaming Mode, open-source customization, and virtual display window management.
Vietnam
Enables any device with a browser to act as a second screen for computers, featuring secure end-to-end encrypted streaming, entire screen or app sharing, multi-device connections, cross-platform support, advanced video quality controls, and easy WiFi setup.
Ukraine
Allows extension of a Mac or Windows workspace to iPad, Android, macOS, or Windows devices as portable second screens, supporting multiple connections, wireless linking, cross-platform use, and practical multitasking like separating documents, chat, or meetings.
Transforms tablets or smartphones into graphic tablets or touchscreens for computers, enabling mouse control, screen mirroring, hardware video encoding, keyboard input, stylus support with pressure and tilt on Linux, multi-touch, window capture, and use as a second screen.
Free, open-source Sidecar/Duet alternative — use your iPhone or iPad as a true second monitor for your Mac over USB or WiFi. Low latency H.264, Retina HiDPI, touch input.
Turns iOS or Android devices into efficient second displays or graphics tablets for Mac and PC, delivering zero-lag, high-resolution output with touch, gesture, and touch bar support, hardware-free setup, secure remote desktop capabilities, and end-to-end encryption.
United States
Convert an Android device into a high-performance USB monitor for Windows 10, enabling duplication or extension of the desktop, low-latency operation, graphics tablet functionality, pressure-sensitive stylus use, and compatibility with phones or tablets.
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Enables tablets to function as HDMI monitors for external devices such as cameras, gaming consoles, and VHS. Features AI-powered upscaling for sharper visuals, CRT emulation for retro games, image adjustments, screenshot sharing, and portable use.
United States
Transforms a tablet or smartphone into an additional wired display using USB for Windows or Mac, enabling high-performance multitasking, touch control, auto landscape or portrait mode switching, support for creative and office apps, and secure connectivity.
United States
Transforms an iPad into a professional drawing tablet for Mac and PC, featuring customizable shortcuts, Magic Gestures, pressure sensitivity with selectable curves, hover support for new pencils, quick keys, and seamless wireless or wired connectivity for artists.
United States
Converts a tablet or computer into a wireless, low-latency secondary display for Mac or PC with USB-C/HDMI connectivity, touch, Apple Pencil, and keyboard support. Offers multiple modes, high-quality images at 60 fps, and integrates with drawing applications for versatility.
United States
