Open Source Swift Chat Software

Signal is a free, open source, messaging app for simple private communication with friends. Say "hello" to a different way of chatting: Signal is all about privacy, but with all the features you expect from a chat app. State-of-the-art end-to-end encryption (backed by Signal's open source protocol) keeps your chats safe. Neither we can read your messages or listen to your calls, nor anyone else. Privacy is not an optional mode, it is how Signal works. In all your messages, all your calls, forever. Send and receive messages, voice memos, photos, videos, GIFs and files for free. Signal uses your phone's data connection so no SMS or MMS charges are incurred. Make crystal clear calls and video calls to people who live across town or across the ocean with no long distance charges. Add a new layer of expression to your chats with encrypted trading cards. You can also create and share your own sticker packs.

Element iOS is the official iPhone and iPad client for the Element communication platform, which is built on the Matrix open standard for secure, federated messaging and collaboration. The app provides users with a rich environment for encrypted messaging, group chats, voice and video calls, file attachments, and room creation, all while interoperating seamlessly with the wider Matrix network — meaning you can communicate across servers and services that adopt the same protocol. On iOS, Element handles user identity, room membership, and end-to-end encryption with strong key management, allowing users to hold secure conversations that only intended participants can read, even across federated instances. The interface adheres to modern iOS paradigms, offering intuitive navigation, notifications, threaded replies, message reactions, customizable themes, and support for rich media rendering.

Session iOS is the native iPhone and iPad client for the Session secure messaging ecosystem, engineered to bring private, anonymous communication to Apple’s mobile platforms without relying on phone numbers or email addresses. The app supports encrypted one-on-one and group chats, voice messages, file and image sharing, and threaded conversations, all delivered over a decentralized onion network designed to conceal metadata such as sender identity, message timing, and network path. On iOS, Session integrates with Apple’s notification and background execution frameworks so that messages arrive reliably while preserving privacy protections, and it supports Face ID/Touch ID unlock to guard access to local message storage. Its interface follows iOS conventions for navigation, attachments, and user interaction, making secure messaging feel natural to Apple users while maintaining rigorous cryptographic standards.

BitChat is a decentralized, peer-to-peer encrypted messaging app built by Jack Dorsey’s Permissionless Tech. It uses Bluetooth Low Energy mesh networking to relay messages without internet, servers, accounts, or phone numbers. Messages are end-to-end encrypted (Curve25519 + AES‑GCM) and the app includes a panic mode to erase data quickly.

A faster, native discord client for your Mac. Accord requires macOS Big Sur (11.0) or higher. If you have Homebrew installed on your Mac, you can get the latest Accord release by installing the accord cask. Alternatively, you can download the latest version of Accord via GitHub releases. These builds will not receive automatic updates, so you will have to manually check for updates to benefit from the latest features and bug fixes. Receive automatic updates, give feedback to the project, and stay up-to-date with changelogs. However, the TestFlight might be less updated.

Chatto is a Swift lightweight framework to build chat applications. It's been designed to be extensible and performant. Along with Chatto there is ChattoAdditions, a companion framework which includes cells for messages and an extensible input component. You can find more details about how it was implemented in our blog. Chatto is a Swift framework to ease the development of chat applications. At the UI level, it takes care of managing the UICollectionView where the messages are displayed and provides a placeholder for an input component. Provides support for interactive dismissal of the keyboard and adjusts the insets automatically when it appears. Calculates this layout in a background queue (partially if your sizing routines can be only executed in the main thread). Triggers notifications to the data source to retrieve more messages (pagination). Encourages clean code by decoupling your message's presentation into different presenters.

Rocket.Chat mobile is moving to React Native. Take your conversations with you and never miss the action with our iOS mobile app, with features including brand new UI with 3 themes, new ways to sort and group conversations, and new onboarding experience. We have developed an exclusive experience for iPad users: you can now multitask by using Rocket.Chat at the same time as other apps.