PIPin — Pin any Mac window on top
Your powerful multitasking companion on macOS
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iwncyxua

PIPin — Pin any Mac window on top - Your powerful multitasking companion on macOS

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AllMyBatteries
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PIPin is your ultimate multitasking companion: pin any window on top of your screen while you work on something else. Keep an eye on it, interact whenever you need. Most PiP tools freeze when you switch Spaces — you're stuck on a still frame. PIPin uses a private Virtual Display so the source never stops rendering. 🧙 ⌘-click any PIP to warp your cursor straight to the real window, interact without switch space. 📱 Stream to iPhone over local Wi-Fi, watch and control your window there.

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iwncyxua
Maker
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Hey hunters! 👋 I built PIPin because I kept running into the same frustration: I'd pin a window on top with one of the usual tools, switch to a fullscreen app, and the mirror would freeze — completely defeating the point. The root cause is that most tools use screen capture. The moment the source window is "off-screen" (like when it's on another Space), macOS stops asking it to render frames. PIPin's fix is to create a hidden Virtual Display and move the window there. macOS treats it as physically connected hardware — so the source app never stops drawing, ever. The visible PIP is just a live mirror of that. Some moments that made me go "ok, this is actually worth shipping": 🤖 I'm letting Claude Code run a long task, jump to my browser to look something up — and when it pauses asking for confirmation, I just ⌘-click the PIP. Cursor warps over instantly. I approve and keep going without ever leaving my Space. That one felt like a cheat code. 📈 I had a position I was watching closely. Pinned the chart in the corner while I kept working — caught the move the second it happened, without ever switching windows. 📖 Following a tutorial used to mean ⌘-Tab every 30 seconds. Now I just pin it. Sounds small. It's not. ▶️ Twitter/X, Reddit, Twitch — none of them support native PiP. PIPin doesn't care. If macOS can see it, PIPin can float it.
Josh Bennett

@lagagggggg Interesting approach technically, but how stable is this under long sessions or heavy GPU usage? Virtual display tricks on macOS usually start breaking once Spaces, fullscreen apps, HDR, or external monitors get involved.

Also wondering how much latency the mirror introduces compared to native PiP. Does interaction still feel instant when dragging, typing, or watching video streams for a few hours straight?

And one more thing: since the source app keeps rendering forever, what does CPU/RAM usage look like compared to standard screen capture based tools? That part matters more than the feature itself for daily use.

iwncyxua
Maker

@josh_bennett1 

Great questions. From my own daily use it's been pretty stable — no freezes or crashes across long sessions, Spaces, or fullscreen apps. Overhead-wise nothing significant on my end either. Best mental model is: it just behaves as if you'd attached one more display to your Mac, because that's literally what's happening under the hood.

It's totally free right now, so easiest answer is just download it and give it a try — you'll know in 10 minutes whether it holds up for your workflow.

Looks useful, but does it affect Mac performance or battery when multiple windows are pinned?

iwncyxua
Maker

@faizan_chhipa Performance has been fine in my own usage — even with 2–3 windows pinned the overhead isn't significant. And most of the time I'm only running one pinned window anyway, so the overhead is basically negligible.

Josphat Munyoki

Wow, a gamer changer is an understatement. I like how I'm able to pin different tabs and use them actively at the same time. And it doesn't feel complicated at all👍

iwncyxua
Maker

@jos_nyoks This made my day, thank you! Glad it clicked for you — if anything's missing or could be better, I'm all ears.