Blueberry Loom is a cryptographically reinforced, open-source form builder that encrypts responses end-to-end using ML-KEM-1024 and authenticated encryption, ensuring only the respondent and form author can read the data.
What is Blueberry Loom?
Blueberry Loom is a web-based form builder that takes form designs from a drag-and-drop interface and produces encrypted, response-collecting forms. It runs entirely in the browser and is developed by Northstrix (as indicated by the GitHub repository). The core function is to create forms where responses are encrypted at submission time using the respondent's browser, preventing any intermediary—including the cloud provider—from decrypting them.
Key Features
- End-to-End Encryption — Uses ML-KEM-1024 key exchange and a ChaCha20 + Serpent-256 CBC + HMAC-SHA3-512 authenticated encryption scheme. Responses are encrypted in the browser before submission; only the form author and the respondent hold the decryption keys.
- Intuitive Drag-and-Drop Form Builder — Supports multi-section forms with flexible layouts, allowing multiple element types (e.g., text, choices) within the same section. No coding required.
- Rapid Form Deployment — Publish forms in a few clicks and immediately start collecting responses without delays.
- Basic Analytics — Provides insight into submission time and respondent's operating system. Dashboard shows visits, responses, and response rate for each form.
- Adaptive, Mobile-Friendly Forms — Forms automatically adjust to different screen sizes, ensuring a smooth experience on mobile devices, tablets, and desktops.
- Free and Open Source — The entire source code is available on SourceForge and the app is hosted at Blueberry Loom. No paid tiers or hidden costs.
Who should use Blueberry Loom?
- Privacy-conscious organizations needing to collect sensitive feedback (e.g., employee surveys, customer complaints) without exposing data to servers.
- Event organizers wanting to reserve spots securely (e.g., the Miami event example on the site) while ensuring attendee data remains confidential.
- Product teams running public polls or community feedback forms where response privacy is paramount.
- Anyone who wants a simple, no-code form builder with strong encryption—no technical setup required.
What can you do with Blueberry Loom?
- Create encrypted surveys — Build surveys with end-to-end encryption for sensitive topics, such as employee satisfaction or health feedback.
- Manage event registrations — Collect attendee details privately; only the event host can see the responses.
- Gather customer satisfaction feedback — Share forms with customers after a purchase, ensuring their honest opinions are secure.
- Run community polls — Ask public questions (e.g., "What matters most?") while keeping individual responses encrypted until seen by the poll author.
Pricing
Blueberry Loom is completely free. There are no paid plans or hidden fees; all features (drag-and-drop builder, encryption, analytics, mobile adaptation) are available at no cost.
FAQ
Is Blueberry Loom really free?
Yes, Blueberry Loom is free to use for everyone. No credit card required, and all features are included without limitations.
How does encryption work in Blueberry Loom?
When a respondent submits a form, their browser generates a key pair using ML-KEM-1024, encrypts the response with the form author's public key, and then discards the private key. The form author decrypts using their own private key. This ensures that even the server never sees the plaintext.
Can I host Blueberry Loom myself?
Yes, the source code is open source and available on SourceForge. You can deploy it on your own infrastructure for complete control.
What export options are available?
The form builder allows you to view responses on the dashboard, but export formats are not explicitly listed. However, you can copy responses manually.
Is there a limit on the number of forms or responses?
The site does not mention any hard limits, but as a free service, usage may be subject to fair use. The open-source nature allows self-hosting without constraints.
Try Blueberry Loom and explore its source code.
