SDCore
Open Source Multi-Value Database
SD Core is a multivalue string database for Windows and Linux: files, fields, values and subvalues, with the SD BASIC language and the SD TCL command processor.
The Windows version is a native Windows port - a real Windows service, Windows accounts and groups, and no POSIX layer to install. Free software under the GPL, and everything ships buildable from source.
The Linux version is a native Linux build - a systemd service, Linux accounts
and groups.