Semaphor icon
Semaphor icon

Semaphor

 13 likes

Zero Knowledge, end-to-end encrypted collaboration tool for teams and businesses. Reviewable source code. Python wrapper for bots & integrations. Encryption white paper. Native offline mode. Faster file-sharing. Built for enterprise.

Semaphor screenshot 1

License model

  • FreemiumOpen Source

Country of Origin

  • US flagUnited States

Platforms

  • Mac
  • Windows
  • Linux  beta
  • Android
  • iPhone
4.2 / 5 Avg rating (4)
13likes
4comments
0news articles

Features

Suggest and vote on features
  1.  End-to-End Encryption
  2.  AES-256 Encryption
  3.  Real time collaboration
  4.  Encrypted Chat
  5.  Multiple Servers
  6.  Team Collaboration
  7.  Mobile friendly
  8.  Blockchain
  9.  Integrated File Sharing

 Tags

Semaphor News & Activities

Highlights All activities

Recent activities

Show all activities

Semaphor information

  • Developed by

    US flagSpiderOak, Inc.
  • Licensing

    Open Source and Freemium product.
  • Pricing

    Subscription that costs $10 per month + free version with limited functionality.
  • Rating

    Average rating of 4.2
  • Alternatives

    36 alternatives listed
  • Supported Languages

    • English

AlternativeTo Categories

Social & CommunicationsOffice & ProductivitySecurity & PrivacyRemote Work & EducationFile Sharing

Apple AppStore

  •   Updated Oct 11, 2018
  •   3.47 avg rating
View in AppStore

Popular alternatives

View all

Our users have written 4 comments and reviews about Semaphor, and it has gotten 13 likes

Semaphor was added to AlternativeTo by explodingsoul on Aug 26, 2016 and this page was last updated Sep 13, 2021.

Comments and Reviews

   
 Post comment/review
Top Positive Comment
adamtervort
Dec 27, 2016
1

Daily Dot has a nice review of Semaphor (and Wickr Professional) as a secure Slack alternative - http://www.dailydot.com/layer8/best-slack-alternatives-secure-encryption/

Judith McLaughlin
Sep 20, 2019
0

Like for this app!

somegirlfromit
Sep 15, 2019
0

End-to-end encrypted chat, free for teams of 5 or less

John Fastman
Jul 8, 2018
0

Semaphor are doing a good thing: building a Slack-type app that allows private communication for teams, built around zero-knowledge encryption. Semaphor's owners, SpiderOak, can't see user data, give it away or lose it in readable format to hackers or government agencies.

That said, apps like Stackfield and Peerio aim for the same goal and are a little bit ahead in terms of the functionality their products offer. Peerio offers a team of up to 10 on their free plan, Stackfield has calendaring and other bells and whilstles.

Overall though, I'm happy Semaphor exists. I hope it develops quickly and, more importantly, that people realise that there is a serious privacy and security problem with apps like Slack, which do not respect their users enough to offer end-to-end encrypted communication.

What is Semaphor?

The SpiderOak team needed a secure solution for group messaging and file sharing without the risks of email or off-the-shelf collaboration tools. We made Semaphor, group messaging with private blockchain encryption. Now your company or team can protect your most important communication with the same No Knowledge application we use at SpiderOak.

Semaphor gives you secure group messaging for your most sensitive data. End-to-end encryption with private blockchain technology protects your private company communication and your everyday work.

Our No Knowledge philosophy is the cornerstone of everything SpiderOak does. Your data in Semaphor is protected by private blockchain technology and end-to-end encryption. This means that all data is encrypted before it leaves your device and no data is visible or accessible to any SpiderOak employees. Only the members of your team have access to your data.

Semaphor 2.0 has been completely redesigned for usability and simplicity. Create teams and channels, send messages and files, all within an easy to use interface. Semaphor's mobile first design gives you full functionality no matter which of your devices you access it from.

Download and install Semaphor on all of your computers and mobile devices. Supported platforms include Windows, macOS, Linux (beta), iOS, and Android.

With something as important as your security and data at stake, you need the ability to verify how our products work.

Semaphor is free for teams of 5 or less. All teams include unlimited message and file retention, unlimited file sharing, a single file size limit of 2 GB, and unlimited channels and messages.

Official Links