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file.io
One-Time Secret
Privnote
PrivateBin
Pastebin.com
Wormhole.app
Zero-knowledge encrypted sharing for files, notes, chat, and anon polls (up to 15GB). We can’t access your data.

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Website, pricing, platforms and company facts side by side.
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| Website | privsen.com | open-gpt.app |
| Pricing | — | |
| Platforms | — | |
| Company | 2025 | — |
| Listed in | — |
In their own words, as submitted to SaaSHub.


Zero-knowledge file/paste/poll/chat sharing for anyone who can’t trust Drive/Slack/WhatsApp with sensitive stuff. Client-side AES-256-GCM; keys live in the URL fragment (server never sees content or metadata); no accounts/PII/phone numbers. Runs on Cloudflare Workers with region pinning. Pricing:...
No description of https://open-gpt.app/ yet.
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Privsen and https://open-gpt.app/.
Privsen's answer
Zero-knowledge by default: client-side AES-256-GCM, keys in the URL fragment, no accounts/PII/phone numbers, no metadata logging. We literally cannot decrypt your content or comply with data requests beyond handing over encrypted blobs.
Privsen's answer
If you need to share up to 15GB files, notes, polls, or chats without trusting a provider, Privsen keeps keys client-side and doesn’t require identity. No server-stored keys, no hidden backups, no data monetization—just pay-per-use credits.
Privsen's answer
People and teams handling sensitive exchanges without wanting Drive/Slack/WhatsApp involved: lawyers, healthcare contractors, M&A/agency folks, security-minded individuals needing short-lived, private links.
Privsen's answer
We built Privsen after seeing “encrypted” services still log metadata, store keys, and wipe accounts via bots. We wanted a tool that is blind by design: keys stay with the user; providers can’t read, track, or sell data.
Privsen's answer
Next.js, React, TypeScript, Hono, R2, KV, D1 Web Crypto API (AES-256-GCM, HKDF).
Privsen's answer
Early-stage; privacy-focused professionals and small teams using pay-per-use credits.
Share your experience with using Privsen and https://open-gpt.app/. For example, how are they different and which one is better?
When comparing Privsen and https://open-gpt.app/, you can also consider the following products.

WeTransfer is a free service to send big or small files from A to B.
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PrivateBin is a minimalist, open source online pastebin where the server has zero knowledge of...
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Pastebin.com is a website where you can store text for a certain period of time.
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