Life & fun · alternatives · 2026
24 alternatives to Zendo
Secure Mobile Messenger using OTP Encryption (iOS/Android)
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Zendo launched in 2015; newer entries below may have overtaken it.
- 1
Hi HN! I’m proud to share that we have built a real 3rd party iMessage client for Android. We did it by reverse engineering the iMessage protocol and encryption system. It's available to download today (no waitlist): https://play.google.com/store/apps/details?id=com.beeper.ima and there's a technical writeup here: https://blog.beeper.com/p/how-beeper-mini-works. Unlike every other attempt to build an iMessage app for Android (including our first gen app), Beeper Mini does not use a Mac server relay in the cloud. The app connects directly to Apple…
2023 · beeper.com · its alternatives →
- 2
Free and open source encrypted chat for iOS.
2017 · chatsecure.org · its alternatives →
- 3
End-to-end encryption messaging platform
2017 · keybase.io · its alternatives →
- 4
- 5
- 6
Secure chat app built with BlackBerry end-to-end encryption
2021 · rolo.chat · its alternatives →
- 7
private messenger, messaging, messenger
2018 · zangi.com · its alternatives →
- 8
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- 10
secure messenger , secure messaging app , Zangi
2018 · zangi.com · its alternatives →
- 11
Secure Anonymous SMS in the cloud (and a phone number)
2018 · crypton.sh · its alternatives →
- 12
Lightning-fast chat UI journal with an unique Discreet Mode
2020 · thezenjournal.com · its alternatives →
- 13
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- 15
SecureDB▲83Encryption as a service for mobile, web and IoT applications
2015 · securedb.co · its alternatives →
- 16CM
2018 · cipherbrowser.com · its alternatives →
- 17
Chat anonymously with friends & strangers
2015 · antiland.com · its alternatives →
- 18
- 19
Team up on email, anywhere your team goes
2015 · zendesk.com · its alternatives →
- 20
Decentralized anonymous blockchain messenger. Crypto In-Chat
2020 · adamant.im · its alternatives →
- 21
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 →
- 22
Minimalist design messaging app w/privacy
2014 · inboxtheapp.com · its alternatives →
- 23
Retro telegrams delivered by iMessage
2017 · teletype.website · its alternatives →
- 24
Zenefits People▲101Find and connect with your co-workers instantly
2016 · zenefits.com · its alternatives →
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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 →