Cost / License
- Free
- Open Source (MIT)
Platforms
- Mac

Apps similar to Duplicate Windows include PiP for Mac, which is free and open source. Other options are OnTopReplica, Floaty, Afloat and WindowWatcher. You can choose from more than 10 Window Managers like Duplicate Windows for Mac, Windows, iPhone and iPad.

A lightweight application that provides a real-time thumbnail replica of any window of your choice. OnTopReplica will stay always on top, allowing you to keep track of the original window while working and without having to keep the keyboard focus on it.


Floaty is a lightweight macOS utility that lets you pin any window so it always stays on top of other applications.






WindowWatcher is a free hybrid window magnifier and remote control spy. It gives Windows the ability to have proper and resizable picture-in-picture support above and beyond Aero Snap. It's great for watching stuff like online TV, streams or Youtube playlists in a small...



Pocket Screen is a lightweight macOS menu bar utility that turns supported app windows into small, always-on-top picture-in-picture reference views.




Overlay2 is like digital tracing paper for your computer. It opens a semi-transparent floating image over video capture or editing software, or 3D modelling software, so you can use the image as a reference or positioning guide.



Picture in Picture (PiP) allows watching videos from the internet while working at a computer. Using unique algorithms, the program finds videos on web pages and allows to open them in a floating window, that remains in the front.



A frame that allows you to have an image or even PDF displayed semi-transparently in front of everything. It enables you to copy, trace, or compare designs, images, and documents with ease, since you can lock the frame and make it undisturbed by mouse gestures.



Magic Pip is an app that can let you view all kinds of stuff in the PiP window. And it can float above other apps, almost like a split-screen!.


