Spantop: Laptop Display Extender
Turn any Mac/Android Tablet into a real extended monitor
Spantop: Laptop Display Extender launched on May 23, 2026 with 103 votes, #303 of 20,538 launches that month and more than 95% of that year's launches.
What it does
Hey 👋 Spantop turns any spare Mac or Android tablet into a wired/wireless extended for your Mac. Use a second Mac or Android tablet as a HiDPI monitor over Wi-Fi, Thunderbolt, or USB-C. Powered by LZ4 for near-zero-latency streaming, with your screen staying local. Sidecar only works with iPads. Spantop works with Macs and Android tablets too. Free forever. Feedback welcome!
Download Spantop: Display Extender by Aditya Dewaskar on the App Store. See screenshots, ratings and reviews, user tips, and more apps like Spantop: Display…
Utilities Developer Aditya Dewaskar Language EN English Size 2.4 MB Mac Works in pairs: install Spantop on this Mac and the free companion app on a spare tablet or second Mac. Connect with USB or Wi-Fi - you get a real extra display. Spantop turns a spare Mac or tablet into a real second monitor for your Mac. WHAT YOU NEED - SPANTOP WORKS IN PAIRS 1. Your main Mac, running this app (the sender) 2. A second device to become the extra screen — another Mac or a tablet — running Spantop too Without a second device there is nothing to extend to. Setup takes you straight there: a tablet scans a QR code to get the free companion app, and another Mac uses this same app (one purchase covers your…from apps.apple.com
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SideDisplayMar 2026 · sidedisplay.co · ▲75I bought a Tesla Model X in 2023 and kept staring at the 17-inch display sitting idle while I worked on my 14-inch MacBook. I often drive to a quiet spot and work from the car, so I wanted to use that screen as a second monitor. Nothing existed to do this, so I tried building it myself. It took over a year of failed attempts: - Hardware mod: didn't want to void the warranty - Zoom screen share: worked but terrible latency, no fullscreen - HLS streaming via OBS: ~2 second delay, unusable as a monitor - WebRTC: Tesla's browser didn't support it at the time A few Tesla software updates later, I…
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