Apps similar to OpenDisplay include Spacedesk, which has a free version. Other options are Side Screen, Deskreen, Tab Display and Duet Display. You can choose from more than 10 Screen Mirroring Apps like OpenDisplay for Mac, Windows, iPad, iPhone and Android.
GlideX is a cross-device screen-sharing solution. Using wired or wireless connections, you can create a bigger and better work or play space. GlideX optimizes your workflow in the blink of an eye!
Taiwan
Turn any Mac you already own — even an old iMac — into a true extended second display for your Mac. No dongle, no subscription, no account, no cloud.
Italy
EU
Uses local Wi-Fi, Ethernet, or Thunderbolt Bridge to add a Mac, Windows PC, or Android device as extra Mac desktop space, or mirror screens on supported computers. It is free, needs no account, subscription, dongle, or cloud relay, and is for trusted networks.
Taiwan
FlashDesk is an all-in-one remote desktop and remote access tool for Windows, macOS, and Linux. Instead of juggling separate apps, it brings remote control and screen sharing, a built-in SSH terminal, session recording with one-click MP4 export, and file transfer into a single...
Japan
Smart devices become monitors by connecting them to a PC via USB! The Convenient Connect TwomonUSB
United Kingdom
Use your iPad as a wireless display, to extend your Mac desktop. Ever wish you had an extra display for your computer? There’s an app for that! With Air Display, you can use your iPad as an additional monitor for your Mac (Windows no longer supported)
United States
Scrivix is an app that transforms your iPad and Apple Pencil into a wireless annotation and control device for your Mac. It is designed for educators, presenters, trainers, and creators, allowing them to draw, highlight, point, scroll, click, and control their Mac during live...
United States
Cloud-native remote desktop tool provides E2E-encrypted, secure access to attended or unattended devices with instant setup, fast connections, zero lag, multi-monitor support, drag-and-drop file transfers, clipboard sharing, and no device or session limits.
Canada
MirrorHall creates virtual second monitors over the network using UDP video streaming among Linux desktop or mobile devices. It is optimized for low latency, and is based on gstreamer and GNOME's mutter screen sharing APIs.
BetterCast lets you use your old device (Mac, Android, iPhone) as real extended displays with zero subscriptions, zero cloud, and native macOS performance.
Philippines
I built Argly as a local-only alternative to TeamViewer/VNC to control your macos with your iphone.
United States
Control your Mac from iPhone or iPad by touch, or play Mac games with an on-screen controller. Free on your own Wi-Fi, no account.
Hong Kong SAR China
