# Looking Glass Core Overview

(last updated July 2024)

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**Note:** Looking Glass Core is no longer being actively developed. Please instead see [Looking Glass Bridge SDK](https://lfdocs.lookingglassfactory.com/software/looking-glass-bridge-sdk) which supports all of the same features and more. 

Looking Glass Core (previously HoloPlay Core) apps will continue to work with Looking Glass displays sold prior to 2024.
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HoloPlay Core unlocks the ability to integrate your existing 3D software with Looking Glass displays, making the Looking Glass a holographic second monitor.

HoloPlay Core comes in two different flavors:

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[core-sdk](https://lfdocs.lookingglassfactory.com/legacy/legacy-software/core-sdk)
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* Native dynamic libraries for Windows, Mac, and Linux

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[corejs](https://lfdocs.lookingglassfactory.com/legacy/legacy-software/corejs)
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* JavaScript for web or Node development 

Check out how **Schrödinger** used the HoloPlay Core SDK to improve their workflow.

![schrodinger\_1](https://content.gitbook.com/content/PuCaeVAli72TiclYlEG5/blobs/j4phfEf6pzwMysHJpEXu/schrodinger_1.gif)

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The Looking Glass Core SDK is currently in closed beta. To apply, [click here](https://look.glass/holoplay-core).
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Email us at <developer@lookingglassfactory.com> if you have any further questions about how you can integrate HoloPlay Core into your software