The only team productivity platform where zero-knowledge is the default. Your data belongs to you, not us. Replace Slack without compromising usability.
Unlike standard chat apps that hold the keys to your data on their servers, Kairos generates keys locally on your device. When you send a message, it's locked before it leaves your computer.
Private keys never leave your device. We couldn't read your messages even if we wanted to.
Every message is encrypted with a unique ephemeral key. Past messages remain secure even if a future key is compromised.
Standard chat apps optimize for their data mining, not your privacy. Kairos reverses the model.
Slack retains the ability to access all your messages for "features" and "compliance". We literally cannot access yours.
We don't just encrypt the message content; we blind the server to who is talking to whom using advanced metadata obfuscation.
Enterprise Key Management (EKM) usually costs extra on other platforms. On Kairos, owning your keys is the baseline standard.
Security doesn't mean sacrificing features.
Create public channels for teams or private groups for sensitive projects. Everything encrypted.
Keep conversations focused. Spin off discussions into threads without cluttering the main view.
Share documents and images. Files are encrypted on your device before upload.
Crystal-clear 1:1 and group video calls with end-to-end encryption. No third-party data passes through.
Instant voice calls with noise suppression. Start a call from any conversation with one click.
Share your screen during calls with real-time annotation. Perfect for code reviews and demos.
We build a search index locally on your machine, so you can search instantly without us seeing queries.
Seamlessly switch between desktop and mobile. New devices are verified via QR code.
Connect Jira, Linear, and GitHub. Bot messages are encrypted in transit to your channels.
Voice calls, HD video, team meetings, and screen sharing — all encrypted end-to-end. No third-party tools needed.
Crystal-clear audio with noise suppression. Start a call from any chat with one click.
Face-to-face meetings in full HD with up to 50 participants. All streams encrypted.
Instant team calls from any channel. No scheduling, no meeting links — just click and talk.
Share your entire screen or a specific app window. Perfect for code reviews, demos, and presentations.
Protect attorney-client privilege with mathematically guaranteed privacy for case files.
HIPAA compliant communication. Share patient data without fear of interception.
Discuss mergers, acquisitions, and sensitive trades on a platform that leaves no paper trail.
| Feature | Kairos Connect | Slack | MS Teams |
|---|---|---|---|
| Default E2E Encryption | |||
| Metadata Privacy | |||
| Device-Bound Keys | |||
| Starting Price (User/Mo) | €18 | €8 (Insecure) | Bundle |
"We switched from Slack because we couldn't risk our IP living on someone else's server. Kairos gives us the usability we need with the security our board demands."
Join 10,000+ security-conscious teams switching to Kairos.
Includes 30-day Pro trial. No credit card required.