Spantop turns another Mac into a second monitor over Thunderbolt or WiFi
By
Aditya Dewaskar
Day-old at best. Try it dunked in something stronger.
Summary
Spantop is a Mac app that lets users turn another computer or device into a real second monitor over Thunderbolt or WiFi, eliminating the need for carrying extra hardware. Built for travelers, remote workers, and multi-device users, it offers lossless LZ4 display with zero latency and a simple setup for extending a Mac workspace.
Key quotes
· 3 pulledI built Spantop because I often wanted a second monitor without carrying one around.
The goal was simple: open the app, connect another screen, and extend your Mac workspace.
Would love your feedback — especially from Mac users who use multi-monitor setups, travel often, or work across multiple devices.
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