AltDisplay vs Deskreen

AltDisplay has no write-up on Specifiction yet; its figures are above.

Deskreen is a desktop app that mirrors a computer screen or one application window to a device’s browser over Wi-Fi. With a Virtual Display Adapter, a browser-equipped device can serve as a second screen. It can work off-grid over local Wi-Fi without internet access, and Flip Screen Mode horizontally flips the image in a tablet or smartphone browser for teleprompter use. During sharing, users can change picture quality, with automatic quality changes also supported. Community is free, open source under AGPLv3, and supports one connected device. Pro costs $24.99 a year and supports up to five connected devices; Teams costs $139.99 a year and supports unlimited devices, with three seats included for teams of up to 20 members. Extra Teams seats cost $10 each. Custom terms are available for enterprise, education, and large organizations. Deskreen says it uses end-to-end encryption; enhanced connection security and VPN support are listed for Pro, Teams, and Custom. Its listed desktop systems are Windows, Linux, and macOS.