Open Source Apple iPhone Communications Apps
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Communications Apps for Apple iPhone
View 1556 business solutionsBrowse free open source Communications apps and projects for Apple iPhone below. Use the toggles on the left to filter open source Communications apps by OS, license, language, programming language, and project status.
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gSOAP Toolkit
Development toolkit for Web Services and XML data bindings for C & C++
The gSOAP toolkit is an extensive suite of portable C and C++ software to develop XML Web services with powerful type-safe XML data bindings. Easy-to-use code-generator tools allow you to directly integrate XML data in C and C++. Serializes native application data in XML. Includes WSDL/XSD schema binding and auto-coding tools, stub/skeleton compiler, Web server integration with Apache module and IIS extension, high-performance XML processing with schema validation, fast MIME/MTOM streaming, SOAP and REST Web API development, WS-* protocols (WS-Security, WS-Policy, WS-ReliableMessaging, etc), XML-RPC and JSON. Licensed under GPLv2. Visit the developer center with guides, tutorials, and examples at www.genivia.com/dev.html The documentation of the toolkit, libraries, plugins and more is available at www.genivia.com/docs.html Commercial-use licenses and expert technical support services are available at competitive pricing levels, please visit www.genivia.com/products.html -
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libimobiledevice
A cross-platform protocol library to communicate with iOS devices
libimobiledevice is a cross-platform software library that talks the protocols to interact with iOS devices. Unlike other projects, it does not depend on using any existing proprietary libraries and does not require jailbreaking. Access filesystem of a device, access documents of file sharing apps, retrieve information about a device and modify various settings, backup and restore the device in a native way compatible with iTunes. Manage app icons arrangement on the device, install, remove, list and basically manage apps. Activate a device using official servers, manage contacts, calendars, notes and bookmarks, retrieve and remove crashreports. Retrieve various diagnostics information, establish a debug connection for app debugging, mount filesystem images, forward device notifications, manage device provisioning. Take screenshots from the device screen (requires mounted developer image). Simulate changed geolocation of the device (requires mounted developer image). -
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PairDrop
PairDrop, Transfer Files Cross-Platform
PairDrop is a self-hosted, open-source alternative to Apple's AirDrop, allowing users to share files between devices over the same local network without the need for an internet connection. -
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Thunderbird for iOS
Open Source Email App for iOS
Thunderbird iOS is the official iPhone and iPad email client offering from the Thunderbird project, bringing the capabilities of a feature-rich, open-source email experience to iOS devices with native UI and Apple platform integrations. The app gives users a powerful tool for managing multiple email accounts, including IMAP and POP3 configurations, and supports modern authentication flows like OAuth for popular providers. Designed with mobile usability in mind, it includes familiar gestures, thread views, swipe actions, attachment previews, and integrated search so users can stay productive on the go. It also handles common email needs like organizing with folders, setting flags, and filtering messages, while respecting platform norms for notifications, background fetch, and data usage. By maintaining a connection to the desktop Thunderbird project’s ethos, the iOS client places emphasis on transparency, extensibility, and user control. -
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Sideband
LXMF client for Android, Linux and macOS to communicate with people
Sideband is a privacy-focused, peer-to-peer mesh messaging protocol and platform that allows users to communicate directly over local networks or the internet without servers. It emphasizes metadata resistance and secure message delivery, working effectively in offline, low-bandwidth, or disaster recovery scenarios. Built-in Rust, Sideband supports encrypted group messaging, file transfers, and network self-discovery. It is ideal for use in community networks, crisis response, and decentralized communications infrastructure. -
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Tutanota
Open source email service with a strong focus on security and privacy
Tutanota is an open source email client focused on security and privacy. It is built with end-to-end encryption and 2FA, so you can be assured of utmost email security. Tutanota is always encrypted, so whether you’re using their secure webmail client, mobile apps or desktop clients, you can be sure to communicate securely. -
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Flying Carpet
File transfer between Android, iOS, Linux, macOS, and Windows
Send and receive files between Android, iOS, Linux, macOS, and Windows over ad hoc WiFi. No shared network or cell connection required, just two devices with WiFi chips in close range. Don't have a flash drive? Don't have access to a wireless network? Need to move a file larger than 2GB between different filesystems but don't want to set up a network share? Try it out! -
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PhoneNumberKit
A Swift framework for parsing and formatting phone numbers
Swift 5.3 framework for parsing, formatting and validating international phone numbers. Inspired by Google's libphonenumber. Import PhoneNumberKit at the top of the Swift file that will interact with a phone number. All of your interactions with PhoneNumberKit happen through a PhoneNumberKit object. The first step you should take is to allocate one. A PhoneNumberKit instance is relatively expensive to allocate (it parses the metadata and keeps it in memory for the object's lifecycle), you should try and make sure PhoneNumberKit is allocated once and deallocated when no longer needed. To parse a string, use the parse function. The region code is automatically computed but can be overridden if needed. PhoneNumberKit automatically does a hard type validation to ensure that the object created is valid, this can be quite costly performance-wise and can be turned off if needed. -
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Signal iOS
A private messenger for iOS
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. -
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Tox
A New Kind of Instant Messaging
Tox is a peer to peer (serverless) instant messenger that focuses on security and privacy. In today's world where digital surveillance is rampant, Tox offers users a communication software alternative that's free from prying eyes and ears, and is, quite literally free and without advertising. Tox comes with all the great features you'd expect from an instant messenger application, including voice calls, video calls, file sharing and screen sharing. Everything done on Tox is encrypted using open-source libraries so you can be assured of completely private conversations. It also has no central servers that can be raided, shut down, or forced to turn over data. There are no corporate interests, no hidden agendas-- just simple, secure and easy to use messaging. -
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Berty
Berty is a secure peer-to-peer messaging app
Berty is an open, secure, offline-first, peer-to-peer and zero trust messaging app. Berty is an encrypted and offline peer-to-peer messenger with no central server. Connect with or without an internet connection, message for free, and avoid surveillance and censorship. Berty is fresh off the development line and hasn’t been audited yet. Please keep this in mind when exchanging data. In some countries, even a lol or a like can get you sent to jail. Berty is end-to-end encrypted - not even our developers could access your data, let alone corporations or governments. Just like blockchain technologies, Berty doesn’t pass your data through central servers - the place where internet service providers, hackers, and governments can intercept your data. Instead, Berty’s network is distributed, based on P2P direct messaging. Berty couldn’t care less about who you are. You don’t need to provide your real name, an email, or a date of birth. You don’t even need a SIM card! -
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Jitsi Meet
Secure, simple and scalable video conferences application
Go ahead, video chat with the whole team. In fact, invite everyone you know. Jitsi Meet is a fully encrypted, 100% open source video conferencing solution that you can use all day, every day, for free — with no account needed. Head over to meet.jit.si and see the service in action before you decide whether you’d like to run your own instance. For those interested, check out the meet.jit.si terms of service and privacy policy. Yep, it’s free — and it’s technologically advanced, too. In fact, Jitsi Meet sounds better, thanks to HD audio with Opus; is anonymous, no need for an account, ever! It also keeps conversations private with encryption by default (and advanced security settings) and is developer-friendly, modify and customize it to your heart’s content. It’s 100% open source. Trade messages and emojis while you video conference, with integrated chat. -
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Zulip
Powerful open source team chat application
Zulip is a powerful open source group chat application that combines the immediacy of real-time chat with the productivity benefits of a threaded conversation model. Zulip’s unique threading model allows users to easily catch up on important conversations, helping to save time and increase productivity. -
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SIM Explorer
Sim Card explorer and decoder
This software uses your smart card reader/terminal to navigate through the SIM Card directory tree. The contents of the files are decoded and showed to the user. Other features, such as CHV management and SIM backup, are also available. -
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Rocket.Chat Mobile
Rocket.Chat mobile clients
A secure and compliant collaboration platform. Own your data, customize anything, and integrate everything. We use communication platforms on a daily basis to collaborate with colleagues, other companies, customers and communities. Most of them give you very little in terms of control and customizations; except Rocket.Chat. Bring together messages, projects, and tasks into one place and watch your team’s productivity rise to new heights. Engage in contextual interactions with customers irrespective of how they contact you. Ensure long-term relationships and improved business outcomes. Create custom messaging experiences within your app or website by integrating and white labeling Rocket.Chat components and enterprise features. Extend and customize your workspace with custom apps, open APIs, powerful plugins and webhooks. -
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WebUploader
A new file uploader solution
WebUploader is a simple modern file upload component developed by the Baidu WebFE (FEX) team, mainly HTML5, supplemented by FLASH. In modern browsers, it can give full play to the advantages of HTML5, without abandoning the mainstream IE browser, using the original FLASH runtime, compatible with IE6+, iOS 6+, and android 4+. When the two sets are running, the same calling method is available for users to choose at will. Using large files to upload concurrently in fragments greatly improves the efficiency of file uploads. Fragmentation and concurrency are combined to divide a large file into multiple pieces and upload them concurrently, which greatly improves the upload speed of large files. When network problems cause transmission errors, only the error fragments need to be retransmitted instead of the entire file. In addition, fragmented transmission can track upload progress in more real-time. -
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Fluwx
WeChat SDK for flutter
fluwx is a Flutter plugin that provides a complete set of integrations with WeChat, one of the largest messaging and payment platforms in the world. It enables login, sharing (text, images, links, music, and videos), WeChat Pay, mini-program launching, and more directly from Flutter apps. The library abstracts platform-specific code for Android and iOS, exposing a unified Dart API. It’s frequently used by apps targeting the Chinese market or international businesses requiring WeChat payment gateways. The plugin is actively updated to track WeChat SDK changes and ensures compliance with its evolving features. For developers, it simplifies the complex task of working with WeChat’s ecosystem while maintaining flexibility and customization. -
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Ovmeet
Video conferencing and collaboration platform
OvMeet is a video conferencing and collaboration platform developed in China that supports video meetings and H5 web/video live streaming. WebRTC, RTMP, SIP, RTSP, whiteboards, document presentation, file sharing, desktop sharing, recording, and more. The older version was built using Adobe/Flash, but that is no longer maintained. The newer version uses modern web technologies to deliver video conferencing services across Web, H5, Android, iOS, PC, etc. It also supports server configurations, live streaming, multiple protocols, and integration with hardware and AR components for extended use cases. Supports WebRTC, RTMP, RTSP, SIP protocols, enabling interoperability with streaming devices, hardware endpoints, and different media sources. -
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Seafile
High performance file syncing and sharing
Seafile is an open source file sync & share solution designed for high reliability, performance and productivity. Sync, share and collaborate across devices and teams. Build your team's knowledge base with Seafile's built-in Wiki feature. Organize files into libraries. A library can be selectively synced into any device. Reliable and efficient file syncing improves your productivity. Access files in the cloud in local S: drive without syncing them. Extends the local disk space with the massive storage capacity on the server. Files can be used offline too. Features built with enterprise environments in mind: AD/LDAP integration, group syncing, department hierarchy, fine-grained permission control. Edit Wiki documents in Markdown format, with built-in WYSIWYG Markdown editor. Knowledge management becomes very efficient with our full-text search, file tagging and review features. The core of Seafile server is written in C programming language. It is small and has a fantastic performance. -
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libsignal
Home to the Signal Protocol and other cryptographic primitives
libsignal is the foundational cryptographic library that implements the Signal Protocol and other essential primitives used across the official Signal clients and servers, enabling secure end-to-end encrypted communication. Written primarily in Rust with bindings and APIs surfaced for Java, Swift, and TypeScript, this library encapsulates critical algorithms like the Double Ratchet, prekey mechanisms, secure key storage, and zero-knowledge group primitives, along with additional utilities for media handling and device key transfer. libsignal abstracts complex cryptographic constructions into reusable components that client applications can adopt to ensure forward secrecy, authentication, and integrity without re-implementing core security logic. Although its primary use is within the Signal ecosystem, its documentation and exposed interfaces allow developers to explore modern secure messaging primitives or use pieces of the protocol in experimental applications. -
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bitchat
bluetooth mesh chat, IRC vibes
bitchat is a decentralized peer-to-peer messaging app that operates over Bluetooth mesh networks, enabling local group chats without the need for internet, servers, or phone numbers. It is designed with privacy and security in mind, offering encrypted private messages and channels alongside a public local chat that requires no registration. -
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Sharik - file sharing via WI-FI
Sharik lets you easily share files within your local network
Sharik is an open-source, cross-platform solution for sharing files via Wi-Fi or Mobile Hotspot. This app allows you to easily send photos, apps, files, text, literally anything, to any kind of device connected to the same network. It's convenient and blazing fast. Sharik is entirely free to use, and it contains no ads. Moreover, its source code is published on GitHub so that everyone can contribute to the development process. So, if you like it, please leave a star on our GitHub repository, and consider contributing: add a new language or help us with code. YOU CAN SEND: 1. Photos (jpg, png, gif, etc) 2. Applications (apk) 3. Files (zip, rar, 7z, pdf, etc) 4. Text GitHub page: https://github.com/marchellodev/sharik Download Sharik right now! -
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RabbitRemoteControl
Remote control. Support VNC, RDP, Terminal, SSH, TELNET etc
Rabbit Remote Control is a open-source, cross-platform, multi-protocol remote control software. Allows you to use any device and system in anywhere and remotely manage any device and system in any way. Its goal is to be simple, convenient, security and easy to use, improving work efficiency. It include remote desktop, remote control, file transfer(FTP, SFTP), terminal, remote terminal(SSH, TELNET), player, network tools etc functions. This is only a read-only mirror repository. Main repository: https://github.com/KangLin/RabbitRemoteControl -
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Bitchat
Bluetooth mesh chat, IRC vibes
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. -
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ChatSecure
ChatSecure is a free and open source encrypted chat client for iOS
ChatSecure is a free and open source messaging app that features OMEMO encryption and OTR encryption over XMPP. You can connect to your existing Google accounts or create new accounts on public XMPP servers (including via Tor), or even connect to your own server for extra security. Unlike other apps that keep you stuck in their walled garden, ChatSecure is fully interoperable with other clients that support OMEMO or OTR and XMPP, such as Conversations (Android), CoyIM (Desktop), and more. ChatSecure only uses well-known open-source cryptographic libraries to keep your conversations private. Other apps may make claims about "military grade" security but, without publicly auditable source code and verifiable end-to-end encryption, you cannot be truly safe.
