Download Space Backup

Install from the command line

For IT people and AI agents: one line installs or upgrades to the latest version, checks the download's fingerprint and prints a JSON result. If Windows blocks the installer, open PowerShell with Run as administrator and run the same line.

Windows (PowerShell)

irm https://spacebackup.net/install.ps1 | iex

With the company key, so the PC joins right away:

& ([scriptblock]::Create((irm https://spacebackup.net/install.ps1))) -CompanyKey XXXXX-XXXXX-XXXXX-XXXXX-XXXXX-XXXXX

Linux (terminal)

curl -fsSL https://spacebackup.net/install.sh | sh

curl -fsSL https://spacebackup.net/install.sh | sh -s -- --company-key XXXXX-XXXXX-XXXXX-XXXXX-XXXXX-XXXXX

Add --system on Linux to install the .deb package with sudo instead of a per-user install. The JSON says which version was installed and where; the result code is in $LASTEXITCODE (0 = ok), and the script never closes your PowerShell window. For a process exit code: powershell -NoProfile -Command "irm https://spacebackup.net/install.ps1 | iex; exit $LASTEXITCODE".

Getting started

1. Run the installer. If Windows says "Windows cannot access the specified device, path, or file", right-click the installer and choose Run as administrator. Space Backup starts in the tray. Open Settings, click Generate next to Company key, then Copy.
2. Install on the other PCs and paste the same key. They appear in each other's Destinations within a minute.
3. Add destination drives (any drive on any PC), then right-click folders in Explorer → Add to Space Backup.
4. Optional, once per PC as administrator: allow it through Windows Firewall, and turn on the Explorer badge (both in Settings).

Early-testing builds. Windows may show a SmartScreen warning because the app isn't code-signed yet; choose More info → Run anyway. Questions: vlad@digitalsigntech.net.