An essay explaining why we don't plan to use MLS:

MLS: The Naked King of End-to-End Encryption

Evgeny Poberezkin

A sidenote, is that Nostr's Whitenoise avoids its main problem. TL;DR: MLS security model is "Trust me bro".

SimpleX Chat now has a much better way to make connections – available in v6.4 beta release! - Short links and more secure - See the name before connecting - Send messages without waiting for your contact to be online Read more in the blog post:

SimpleX network: new experience of connecting with people — available in SimpleX Chat v6.4-beta.4

v6.4-beta is available on PlayStore, TestFlight and GitHub.

SimpleX Chat is #1 messenger recommended by Whonix!

Whonix

Instant Messenger Chat

Anonymous Chat, IRC, XMPP in Whonix.

The comparison of 6 messengers in c't magazine (Heise.de) They ranked SimpleX Chat as the best for privacy and security!

heise magazine

Eine gute Hand

Ist es Zeit, sich von WhatsApp abzuwenden? Aber wohin? Zu Signal oder lieber zu einem Dienst mit Servern in Europa? Oder wäre vielleicht doch ein ...

v6.3 of SimpleX Chat is released 🚀 - preventing spam and abuse in public groups. - group improvements: mention other members, improved performance. - better chat navigation: organize chats into lists and jump to found and forwarded messages. - privacy and security improvements: chat retention period and private media file names. Read more:

SimpleX Chat v6.3: new user experience and safety in public groups

Livestream on X: February 11, 5pm UTC, 9am PT. SimpleX network: Power to the People! Evgeny and Dan Keller (co-founder of Flux) will talk about: - extreme decentralisation, - Flux servers in the apps, - future commercial model, - large content channels, - moderation & freedom of speech. Join us at

X (formerly Twitter)

SimpleX Chat (@SimpleXChat) on X

The first network without user IDs for private, secure and decentralized messaging. Get the open-source app: https://t.co/7cmX6RYaiq

SimpleX Chat v6.2 is out! The app now includes both servers that we operate and servers independently operated by Flux – thanks to Daniel Keller and Flux team! More privacy and decentralization for all users! Also in v6.2: - business chats! - better UX: open chat on first unread (not on iOS yet), show who reacted. - bette iOS notifications! Read more:

SimpleX network: preset servers operated by Flux, business chats and more with v6.2 of the apps

Servers operated by Flux added to SimpleX Chat apps (v6.2-beta.1) to improve metadata privacy – a game changer for SimpleX network users!

Servers operated by Flux - true privacy and decentralization for all users

Huge thanks to Daniel Keller (Flux CEO and co-founder) for supporting our vision for extreme decentralization of communications!

Our criticism of recently published Wired article: "Wired's Attack on Privacy"

Wired’s Attack on Privacy

New security review by Trail of Bits and new v6.1 released – better calls, better iOS notifications and better user experience!

SimpleX network: cryptographic design review by Trail of Bits, v6.1 released with better calls and user experience.

Secure Messaging Apps Comparison | Privacy Matters

This site compares secure messaging apps from a security & privacy point of view. These include Facebook Messenger, iMessage, Skype, Signal, Simple...

by is the great comparison of messaging apps, but there are several incorrect statements about @SimpleXChat there. Commenting in thread 🧵 below.

Please fill this survey about SimpleX Chat:

SimpleX Chat user survey 2

Turn data collection into an experience with Typeform. Create beautiful online forms, surveys, quizzes, and so much more. Try it for FREE.

It is a smaller version of the survey we did last year, please answer again if you answered then. Thank you!

Announcing $1.3m pre-seed investment from @jack and Asymmetric VC in SimpleX Chat 🚀

SimpleX network: the investment from Jack Dorsey and Asymmetric, v6.0 released with the new user experience and private message routing.

Also SimpleX Chat v6.0 stable is now released with the new user experience and private message routing – details in the post.

In case you missed the news, #ChatControl is back on the agenda of the EU governments:

Take action to stop chat control now! – Patrick Breyer

We wrote before that strong e2e encryption is the only way to protect children online:

Protecting Children's Safety Requires End-to-End Encryption

Write to the MPs you voted for – every single letter can change the outcome. And huge thanks to Patrick Breyer for fighting this insanity.

Please note: we do NOT control the domain simplexchat.org It might be a phishing site to collect the data (it has an exact copy of our website https://simplex.chat). We submitted the complaint to the domain registrar (GNAME). Do NOT download anything from simplexchat.org, obviously.

SimpleX Chat v6.0-beta.4 is released! It is stable to use, and please let us know any issues - any help testing it is really great! You can get beta version for iOS from Apple TestFlight, and for Android from GitHub or from our F-Droid repo (it's still in review in Play Store beta channel):

Download SimpleX apps

The final release will be published on 8/14, together with the announcements.

Communication privacy and hard product choices:

SimpleX: Redefining Privacy by Making Hard Choices

We are upgrading the preset SimpleX relays to the new version - it is compatible only with the apps starting from v5.5.3 (released early February) - please upgrade to the latest version and ask your friends to upgrade too.

SimpleX Chat v5.7 released: - quantum resistant e2e encryption with contacts enabled by default. - forward messages without revealing the source and save them to private notes. - in-call sounds and switching sound sources. - customizable profile images - from square to circle. - better network connection management. Also, we added Lithuanian interface language to Android and desktop apps - thanks to our users! Read more:

SimpleX network: legally binding transparency, v5.7 released with better calls and messages