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Apps / Delta Chat

Delta Chat

Decentralized private messenger with chat-shared tools and games

Delta Chat ✓ Verified

chat.delta.desktop
View on Flathub ↗

Delta Chat is a reliable decentralized instant messenger that is easy and fun to use for friends, family, groups and organizations. Delta Chat is developed by a dedicated FOSS contributor community that jointly releases refinements and new features several times a year, across many stores and platforms world-wide.

Features at a glance:

  • 🌐 Anonymous. Instant onboarding without a phone number, e-mail or other private data.
  • 📱 Flexible. Supports multiple chat profiles and is easy to setup on multiple devices.
  • 🧩 Extensible. Add tools like shopping lists, calendars or gaming apps to any chat.
  • 🌧️ Reliable. Works under bad and adversarial network conditions.
  • 🛡️ Secure. Audited End-to-End encryption safe against network and server attacks.
  • 🏠 Sovereign. Can be run with your own e-mail address or server.
  • 📜 FOSS. Fully Open Source/Free Software, built on Internet Standards.
Source code ↗Contribute ↗Report an issue ↗Website ↗Donate ↗Subscribe via RSS

Screenshots

Main View showcasing multiple accounts, chats and a group conversation
Main View showcasing multiple accounts, chats and a group conversation
We have different themes, here darkmode with beach background
We have different themes, here darkmode with beach background
You can have as many profiles as you like, just set a name to get a new chatmail account instantly
You can have as many profiles as you like, just set a name to get a new chatmail account instantly
You can also use Delta Chat as an email client with your existing email address
You can also use Delta Chat as an email client with your existing email address
small screen mode: here you can see profile sidebar and chat list
small screen mode: here you can see profile sidebar and chat list
small screen mode: here you can see a conversation in a chat
small screen mode: here you can see a conversation in a chat
Darkmode with default background
Darkmode with default background

Observed history

App ChangeVersionWhen ↓
updatedv2.62.028 Sept 2026

Upstream releases

Release notes supplied by the developer. These dates are not Flathub package publication times.

v2.62.027 Sept 2026
  • multiple relays per default, stay connected even if one goes down
  • sent images now look sharper
  • new languages added
  • many small improvemenets
v2.59.123 Aug 2026
  • bugfix release
  • fix: new created profiles were always team profiles
v2.59.015 Aug 2026
  • reactions are now supported in channels
  • Experimental: team profiles can be created now
v2.57.027 Jul 2026
  • important bugfixes