Draft:Lepton (Software)
Android compatibility layer for Linux
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Lepton is an Android compatibility layer for Linux developed by Valve Corporation. It is based on Waydroid and allows Android applications to run on SteamOS and other Linux-based operating systems.[1] It is comparable to Valve's Proton, which provides Microsoft Windows application compatibility on Linux, but targets Android instead.[2]
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Submission declined on 4 March 2026 by SocDoneLeft (talk).
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This draft has been resubmitted and is currently awaiting re-review. |  |
Comment: See WP:SOLUTION. Rewrite in WP:NPOV and resubmit. SocDoneLeft (talk) 19:31, 4 March 2026 (UTC)
| Lepton | |
|---|---|
| Developer | Valve Corporation |
| Initial release | 2026 (expected) |
| Operating system | SteamOS, Linux |
| Platform | x86-64, ARM64 |
| Type | Compatibility layer |
| Website | store |
Lepton was developed for the Steam Frame, Valve's standalone virtual reality headset, which runs SteamOS on ARM-based hardware.[3] The layer allows the headset to run VR applications that were built for Android-based devices such as Meta Quest.[4]
Background
Several virtual reality headsets, including the Meta Quest series, run Android and use applications built for that operating system.[5] The Steam Frame, announced in November 2025, runs SteamOS rather than Android, which meant existing Android VR applications could not run on it without a compatibility layer.[3]
Valve had previously developed Proton, a fork of Wine, to run Windows games on Linux. Proton is used on the Steam Deck.[2] Lepton takes a similar approach, forking the open-source Waydroid project rather than building a new Android compatibility solution.[1]
Technical overview
Lepton is based on Waydroid, which runs Android inside a Linux namespace container.[1] Waydroid uses a system image derived from LineageOS and requires the Wayland display protocol.[6]
The containerization approach differs from full emulation or virtualization in that Android applications can access host hardware directly while remaining isolated from the host operating system.[6] Applications must be compiled for the same CPU architecture as the host device, or use additional translation layers.[7]
The Steam Frame uses an ARM-based Qualcomm Snapdragon 8 Gen 3 processor, so Lepton can run ARM64 Android applications without translation on that device.[3] On x86-based systems such as the Steam Deck, ARM-only Android applications would require additional translation.[1]
Development
Reports of Valve experimenting with Waydroid appeared in 2024.[1] The name "Lepton" was identified in December 2025 through listings on SteamDB, a third-party database that tracks Steam applications.[8] The listings included a main application and a development version, with a logo depicting a frog.[1]
The name follows Valve's convention of naming compatibility software after subatomic particles.[2]
Compatibility testing lists on SteamDB showed that Valve had tested Android VR applications including Moss Book II, Open Brush, Pistol Whip, and The Lab.[9]
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