Credits and licences
Formsieve for Gravity Forms and Formsieve for CF7 are free software, released under the GNU General Public License, version 2 or later (GPL-2.0-or-later). Copyright 2026 Thinking42.
Bundled code
| Component | Where | Licence |
|---|---|---|
| Formsieve core | vendor-prefixed/42design/formsieve-core/ |
GPL-2.0-or-later (Thinking42) |
| Composer class loader, generated by Strauss | vendor-prefixed/composer/, vendor-prefixed/autoload.php |
MIT (Nils Adermann, Jordi Boggiano) |
| Disposable e-mail domain list | vendor-prefixed/42design/formsieve-core/src/data/ |
CC0 1.0 (public domain dedication); source and date in the licence note next to the list |
No fonts, images, icons or scripts from third parties are bundled, and the download contains no Gravity Forms, Contact Form 7 or TypeSafe logos.
Services
Formsieve calls, at your choice and with your consent, TypeSafe AI, Inc.'s Jev model directly or through Vercel AI Gateway, OpenRouter or a proxy you configure. Those services are not part of Formsieve and have their own terms: see Data processing by route.
Trademarks
Formsieve is an independent product of Thinking42. It is not affiliated with, endorsed by, or sponsored by TypeSafe AI, Inc., Rocketgenius, Inc., or Rock Lobster Inc. TypeSafe and Jev are trademarks of TypeSafe AI, Inc. Gravity Forms is a registered trademark of Rocketgenius, Inc. Contact Form 7 is a registered trademark of Rock Lobster Inc. WordPress is a registered trademark of the WordPress Foundation. All other names are used only to identify compatibility.