Start with your NTP server IP

Download AR Fast SNTP.

Choose your platform, install AR Fast SNTP, enter the IP address of your time server, and see the sync status. Free and open source.

Windows stableLatest versionWindows x64

Install AR Fast SNTP

Download the Windows app, enter your SNTP server IP address during setup, and open Studio to see your synchronization status. The service keeps running in the background.

Download for Windows x64 View release notes

Verify your download (SHA-256)

Download the SHA-256 checksum file, then compare its digest with:

Get-FileHash .\ARFastSNTP-Setup-Windows-x64.exe -Algorithm SHA256

Use all releases for version history. Each GitHub Release records its verified source commit, installer, and checksum.

See the application before installing.

This is a real screenshot of the Avalonia Studio included in the installer.

Actual Windows Studio showing time source health and expanded Status History.