Session
Session is a free, open-source messaging app for Android. Encrypted private messenger. It has 916 GitHub stars and is released under the GPL-3.0-only license, and you can install it from F-Droid.
github.com/session-foundation/session-android (opens in a new tab)
- Android
- Kotlin
- Messaging & chat
- Actively maintained
About Session
This is an unofficial rebrand of Session without Firebase push service so the "fast mode" can't be enabled. If you want to use the "fast mode" please use the official Session client from their own repo. Session is a new breed of encrypted private messenger, built on a unique network of user-operated servers spread all over the world. With no central servers, Session can't leak or sell your data. You don't need a phone number or email to sign up — your Session ID can stay completely anonymous. And Session's private routing protocols keep your messages secret and secure. No one ever knows who you're talking to, what you're saying, or even your IP address.
Privacy and F-Droid
F-Droid builds Session from its published source code and flags anti-features such as ads, tracking or reliance on non-free services.
- Relies on a non-free network service
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What is Session?
Session is a free, open-source messaging app for Android. Encrypted private messenger. It has 916 GitHub stars and is released under the GPL-3.0-only license, and you can install it from F-Droid.
Is Session free and open source?
Yes. Session's source code is public on GitHub under the GPL-3.0-only license, which is OSI-approved or FSF-free. F-Droid flags these anti-features on its latest build: relies on a non-free network service.
How do I install Session?
You can install Session from F-Droid (package network.loki.messenger.fdroid); the links are on this page. Its GitHub repository also publishes releases (latest: 1.33.5).
Is Session still maintained?
The repository's most recent commit was on Oct 8, 2026. Its F-Droid listing was last updated on Sep 3, 2026. appsgit only lists apps whose repository had a commit in the last six months.