Spantop turns another mac into a real second monitor for your Mac. Instead of buying extra hardware, you can extend your workspace to a nearby screen over Thunderbolt or WiFi. Lossless LZ4 display. 0 latency. It is built for people who travel, work from cafés, use multiple devices, or want a quick second display without a bulky monitor. Simple setup, real extended desktop, and a lightweight Mac-first experience.
Hey Product Hunt 👋
I built Spantop because I often wanted a second monitor without carrying one around.
Spantop lets you turn another computer or device into a real second monitor for your Mac over Thunderbolt or WiFi. It is made for people who travel, work from cafés, use multiple screens, or just want more space without buying extra hardware.
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.
nice! does it work with windows? I mainly use mac for work, but still sometimes switch to windows for creative work, and connecting mac as a second monitor was always difficult with third party software.
@aditya_dewaskar congrats with the launch!
What features are free and what require a paid update?
It would be nice to see the app in action somehow, maybe even captured from your POV using an iPhone, I think that might boost interest/conversion for you.
Good luck!
About Spantop on Product Hunt
“Turn any Mac into a real second monitor”
Spantop launched on Product Hunt on May 23rd, 2026 and earned 90 upvotes and 4 comments, placing #8 on the daily leaderboard. Spantop turns another mac into a real second monitor for your Mac. Instead of buying extra hardware, you can extend your workspace to a nearby screen over Thunderbolt or WiFi. Lossless LZ4 display. 0 latency. It is built for people who travel, work from cafés, use multiple devices, or want a quick second display without a bulky monitor. Simple setup, real extended desktop, and a lightweight Mac-first experience.
Spantop was featured in Mac (103.5k followers), Productivity (652.2k followers) and Remote Work (4k followers) on Product Hunt. Together, these topics include over 145k products, making this a competitive space to launch in.
Who hunted Spantop?
Spantop was hunted by Aditya Dewaskar. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how Spantop stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Aditya Dewaskar