Share one-time secrets through a browser-based platform that encrypts them with AES before sharing.
Open source
24 alternativesHemmelig.app
The Hemmelig.app project shares encrypted secrets to help keep sensitive information out of chat logs, email, and similar channels.
About Hemmelig.app
Hemmelig.app is a GitHub repository for an encrypted secret-sharing tool designed to keep sensitive information out of chat logs, emails, and similar channels.
It uses client-side AES-256-GCM encryption, so data is encrypted in the browser and the server stores only encrypted data. Users enter a secret on hemmelig.app or a self-hosted instance, set an expiration time, view limits, and an optional password, then share a link with the recipient. The secret is deleted after being viewed or after it expires.
The project supports Docker deployment, a command-line tool, file uploads for authenticated users, QR codes, IP restrictions, and webhook notifications. It suits individuals and teams who want to share passwords, keys, or notes without leaving plain text in messages. The repository was archived on Oct 5, 2026 and is read-only, while the hosted service at hemmelig.app continues separately.
Key features
- Client-side AES-256-GCM encryption in the browser
- Self-destructing secrets with expiration and view limits
- Optional password protection for shared secrets
- IP restrictions to limit access by range
- Encrypted file uploads for authenticated users
- Docker deployment and CLI for managing secrets
Best for: Individuals and teams who need to share sensitive text or files without leaving plain copies in chat or email.
Good for
- Client-side encryption means server stores only encrypted data
- Expiration and view limits delete secrets automatically
- Supports Docker deployment and command-line use
- Includes QR codes and webhook notifications
Watch out for
- Repository was archived on Oct 5, 2026 and is read-only
- Archived repository receives no fixes, features, or releases
Hemmelig.app at a glance
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
Hemmelig.app alternatives
Tools and sites you could use instead, ranked by how closely they match.
Yopass encrypts secrets in the browser and creates one-time links that expire, providing a way to share sensitive information without accounts.
Hemmelig lets users share encrypted messages that automatically self-destruct after being read, according to its site description.
OneTimeSecret creates self-destructing links for sharing passwords and other sensitive information; the page also describes self-hosting.
Available on web, iOS, Android, and desktop, Proton Mail is an encrypted email service that offers free accounts.
FreemiumOpen sourcePick
24 alternatives
Tuta is an email service whose repository says it encrypts emails, contacts, and calendar entries across users’ devices.
Open source
24 alternativesPopular in Encryption & Private Sharing
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Hemmelig.app FAQ
What is Hemmelig.app used for?
It shares encrypted secrets through a link to keep sensitive information out of chat logs and email. Secrets are deleted after viewing or expiry.
How does Hemmelig encryption work?
Encryption happens in the browser with AES-256-GCM. The server stores only encrypted data and does not see secrets or keys.
Is the GitHub repository still maintained?
No. It was archived on Oct 5, 2026 and is read-only. The hosted service at hemmelig.app continues separately.
Can I self-host Hemmelig?
Yes. The repository documents Docker and Docker Compose deployment with database and domain configuration.
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