Semaphor 2.0

Completely redesigned and engineered from the ground up, Semaphor 2.0's security and commitment to user experience lets you focus on what's really important: your business.



Get notified when Semaphor 2.0 is released

Semaphor 1.0 is still available for download as we put the finishing touches on version 2.0.

Semaphor 1.0

Our initial version of Semaphor, version 1.0, comes packed with all the features you love like our crazy-fast search, easy file sharing, and of course — it's all cryptographically secure.


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Available Everywhere

Semaphor has a unified user experience regardless of the device you use it on. Your experience is seamless between devices and ensures you never miss a conversation.


At launch, Semaphor 2.0 will support Mac OS, iOS, Android, Windows, and Linux.

  • End-to-End Encrypted

    Every message or file is encrypted before data leaves your device, and is so cryptographically secure not even SpiderOak can read your messages.

  • Peer Reviewed Source Code

    With something as important as your privacy and data at stake, it's important that you have the ability to verify how our products work. We invite you to download and review Semaphor's source code. You can do so here.

  • Bot & Integration Friendly

    Semaphor allows secure integration with third party services through Bots. Developers, system administrators, marketing, sales, and customer support can receive essential notifications within Semaphor, without ever allowing data from within the application to leak out.

    View information on creating bots on our Github page.

  • Available Cross-Platform

    In a BYOD environment, employees want convenience, the IT staff wants greater control, and management wants to minimize risk and increase security. Semaphor meets all of these needs with cross platform and mobile support, beautiful design, end-to-end encryption, and secure file transfer capability.

  • File Sharing Support

    Files can be shared in a channel or direct message. Files shared in Semaphor enjoy the same end-to-end encryption as messages, and are available for download on all of your devices.

  • Built with Business in Mind

    Semaphor offers something that other collaboration tools can’t: the highest level of security with No Knowledge, end-to-end encryption. You can even review the source code.

    It’s a beautiful thing: security and usability in one solution.

Every Conversation in One Place

Be part of different Teams and countless Channels without the fear of information overload. Every conversation is all in one place and easily manageable at a glance.

Premium design backed by the world's best support team

The Pro plan includes unlimited message and file retention, unlimited file sharing, single file size limit of 2 GB, and unlimited channels and messages. All of your team's communication in one No Knowledge application. 

Semaphor Pro Team

$9

Per user, per month. No user minimum.
30 day trial, upgrade at any time.

best Value Download Semaphor 1.0 Now

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