Choose your platform
Windows installation
Download the `.exe` NSIS installer, open it, and follow the setup prompts. A SmartScreen message is expected for an unsigned preview. Do not bypass a warning for a file from another website.
macOS installation
Choose `aarch64` for M1 or newer Macs and `x86_64` for Intel Macs. Open the `.dmg` and drag Atmosphere to Applications. The ad-hoc signed, non-notarized preview may require System Settings → Privacy & Security → Open Anyway after the first attempt.
Linux installation
Use `.deb` on Debian or Ubuntu, or `.AppImage` on other common x64 distributions. WebKitGTK-compatible system libraries are required.
chmod +x Atmosphere*.AppImage
./Atmosphere*.AppImage
Verify the installer
Download the matching `checksums-*.txt` from the release and compare its SHA-256 digest.
# macOS or Linux
shasum -a 256 Atmosphere_*
# Windows PowerShell
Get-FileHash .\Atmosphere_* -Algorithm SHA256GitHub build provenance can also be checked with:
gh attestation verify ./Atmosphere_* --repo yessur3808/atmosphere
Prefer the browser?
Open Atmosphere on the web; no installation is required. The current desktop preview uses the same interface and streams its media library from the public HTTPS deployment.