ChatSecure /
ChatSecure-iOS
ChatSecure iOS is a free and open-source messaging application that supports end-to-end encrypted chat over XMPP with OMEMO and OTR protocols.
Overview
ChatSecure is a privacy-focused mobile client for the XMPP messaging protocol on iOS. It supports robust end-to-end encryption by natively implementing OMEMO and Off-the-Record (OTR) cryptographic primitives, enabling users to establish secure communication pipelines over standard federated networks or private organizational servers.
Its design is secure, avoiding any integration of proprietary analytics or background tracking frameworks. ChatSecure allows users to register multiple accounts easily, sync contact lists across distinct servers, and verify encryption keys manually via QR codes. The primary consideration is that XMPP requires some technical familiarity to configure correctly, and push notifications depend on specialized server-side gateways. For advanced users seeking absolute control over messaging servers and end-to-end encryption parameters, ChatSecure iOS is a highly practical utility.
Key topics
- chatsecure-ios
- xmpp-client
- omemo-encryption
- secure-messaging
- otr-protocol
Getting started
Installation steps vary depending on how a project is packaged, so the most reliable source is always the official README. As a starting point:
How it compares
Here is how this project sits alongside a few other tools in the same category:
Questions about this project
- What is ChatSecure-iOS?
- ChatSecure is a privacy-focused mobile client for the XMPP messaging protocol on iOS. It supports robust end-to-end encryption by natively implementing OMEMO and Off-the-Record (OTR) cryptographic primitives, enabling users to establish secure communication pipelines over standard federated networks or private organizational servers.
- What license does ChatSecure-iOS use?
- GPL-3.0
- How popular is ChatSecure-iOS on GitHub?
- ChatSecure-iOS has roughly 1.8k stars and 310 forks on GitHub as of the latest data.
- Is ChatSecure-iOS actively maintained?
- This repository has been updated recently, which is generally a good sign of active maintenance.
- What language is ChatSecure-iOS written in?
- ChatSecure-iOS is written primarily in Swift, Objective-C.
Repository info
| Owner | ChatSecure |
|---|---|
| Primary language | Swift, Objective-C |
| License | GPL-3.0 |
| Created | July 16, 2026 |
| Last updated | July 16, 2026 |