Work · alternatives · 2026

24 alternatives to Semaphor 2.0

Messaging secured by end-to-end encryption

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Semaphor 2.0 launched in 2018; newer entries below may have overtaken it.

1. 1
   Keybase for Mobile▲159

   End-to-end encryption messaging platform

   2017 · its alternatives →

2. 2
   Crypho▲84

   End-to-end-encrypted messaging and file sharing

   2016 · its alternatives →

3. 3
   Keybase Chat▲253

   End-to-end encrypted chat built into Keybase

   2017 · its alternatives →

4. 4
   Threema▲79

   The messenger that puts security and privacy first

   2019 · its alternatives →

5. 5
   Just Mail▲64

   Secured email platform based on distributed storage network

   2014 · its alternatives →

6. 6
   blockslack.io▲78

   Chat for small teams — encrypted and decentralized

   2019 · its alternatives →

7. 7
   Crypton.sh - SMS▲85

   Secure Anonymous SMS in the cloud (and a phone number)

   2018 · its alternatives →

8. 8
   Cyphr▲4

   Secure messaging made easy - encrypted, private & 100% yours

   2015 · its alternatives →

9. 9
   Encryptochat▲68

   True end-to-end encrypted messaging.

   2020 · its alternatives →

10. 10
    Airmink▲68

    Secure and private 1-on-1 video, voice, chat, file sharing

    2020 · its alternatives →

11. 11
    The Blik▲69

    Secure messaging with non-shareable contact

    2019 · its alternatives →

12. 12
    Stealthy▲94

    Messaging with blockchain identity and user controlled data

    2018 · its alternatives →

13. 13
    Bitwarden Send▲79

    Easily transmit text or files fully encrypted

    2021 · its alternatives →

14. 14
    ADAMANT Messenger▲79

    Decentralized anonymous blockchain messenger. Crypto In-Chat

    2020 · its alternatives →

15. 15AE
    An Elliptic Curve-Based Secure Chat, Written Using Rust and Protobuf▲66

    This is a project I made to learn more about crypto. I've also written a [post](https://vaktibabat.github.io/posts/ecurvechat/) that explains all the crypto concepts and algorithms used in the project, and how I implemented them. I'd be very glad for any feedback about both the code and the post :)

    2024 · github.com · its alternatives →

16. 16
    Kloak, A secret manager that keeps K8s workload away from secrets▲63

    Kloak - Kubernetes eBPF Secret Interceptor for HTTPS. Secure secret management without application changes or sidecars.

    Apr 2026 · getkloak.io · its alternatives →

17. 17
    WhatsApp end-to-end encryption▲33

    Cross platform end-to-end encryption for 1:1 & group chat 🔒

    2016 · its alternatives →

18. 18
    Threema▲7

    End-to-end encrypted messaging

    2015 · its alternatives →

19. 19
    Keybase Teams▲14

    A fully encrypted Slack-like communications tool

    2017 · its alternatives →

20. 20OD
    Opensource Desktop Implementation of the Threema Crypto Messenger▲39

    2016 · github.com · its alternatives →

21. 21IC
    I created a web app to encrypt/decrypt messages using Web Crypto API▲35

    2024 · webcrypto-private-messages.vercel.app · its alternatives →

22. 22
    SendOtherSocials▲7

    Share encrypted messages & files privately

    Sep 2025 · play.google.com · its alternatives →

23. 23
    OctaChat▲8

    Secure Messaging Platform

    2025 · octapull.com · its alternatives →

24. 24
    Signature Bounties: Encrypted P2P Messaging▲13

    Encrypted P2P messaging with user controlled data

    2018 · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →