Spintax Studio
Offline Windows editor for spintax templates with live preview
...Generate variants locally, reproduce them with a seed, and export as plain text, an XLSX workbook, or one file per variant.
Offline by default: no account, no telemetry, no Node.js, PHP or Python runtime — one self-contained executable. Optional AI drafting is off until you turn it on and talks only to the endpoint you configure, with your own key when it needs one.
Interface and built-in help in 14 languages. Free and open source, GPL-3.0-or-later. The SPINTAX language and its engine family are documented at spintax.net.