PUN Classic (also called PUN1) is the original and first major version of PUN. It is now replaced by PUN2 which is refactored and enhanced. We highly recommend starting new projects with PUN2 and if possible migrating existing ones from PUN1 to PUN2 by following our "Migration Notes". PUN Classic will be maintained for the coming months. We will fix important bugs and support new Unity versions but new features will be added only to PUN2.
pun | v1 switch to v2  

Open Source Software at Photon

We use open source software across Photon SDKs, in the Photon Server and Photon Cloud backend.

This page lists the open source and other third-party software used by Photon products and their respective licenses.

Photon Server And Plugins SDKs

See the list of Photon Server and Plugins SDKs open source licenses.

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Photon Native Client SDKs

See the list of Photon Native Client SDKs open source licenses.

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Photon .NET Client SDKs

See the list of Photon .NET Client SDKs open source licenses.

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Photon Unity Networking (PUN)

PUN (and PUN+) builds on top of the Photon .NET Client and all of the open source software (OSS) used by it. See the list of Photon Unity Networking (PUN) "exclusive" open source licenses.

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Photon Voice

Photon Voice package includes Photon Unity Networking (PUN) and all of the open source software (OSS) used by it. See the list of Photon Voice "exclusive" open source licenses.

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Photon Quantum

Photon Quantum v1 package includes Photon Unity Networking (PUN) Classic and all of the open source software (OSS) used by it. Photon Quantum v2 package includes Photon Realtime Unity SDK (Photon .NET Client SDK) and all the open-source software (OSS) used by it. See the list of Photon Quantum "exclusive" open source licenses.

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