Communication Software for iOS
Movim
Movim is a distributed social platform, with web client and mobile apps, that protects your privacy, comes with a set of awesome features and uses the industry-standard XMPP protocol.
ICQ
ICQ is the oldest cross-platform messenger and VoIP client. It was originally developed by the Israeli company Mirabilis in 1996, later sold to AOL in 1998. With ICQ you can stay connected with friends, family and co-workers. ICQ provides instant messaging andcan conver audio messages to text.
Matrix.org
Matrix.org is an open network for secure, decentralized communication. It gives you a simple HTTP APIs and SDKs (iOS, Android, Web) to create chatrooms, direct chats and chat bots, complete with end-to-end encryption, file transfer, synchronised conversation history, formatted messages, read receipts and more. All conversations on Matrix are replicated over all the servers participating in them, meaning there are no single point of control or failure.
Wickr
With Wickr you can control and protect your most critical communications. Unlike other video conferencing and collaboration platforms, Wickr Pro is end-to-end encrypted and built to scale for any Enterprise. Featuring unmatched security, total compliance, secure file transfer, SSO and MDM integration, Bots, full administrative controls and a whole lot more.
Jami
Jami is a free, open-source. universal distributed communication platform which preserves the user's privacy and freedoms. Jami supports a variety of video input options, including mutliple cameras and image and video files, and the selection of audio inputs and outputs with high quality audio and video codecs.
Jitsi
Jitsi is an open-source project and software toolset that allows you to easily build and deploy secure video conferencing solutions. At the heart of Jitsi are Jitsi Videobridge and Jitsi Meet, which let you have conferences on the internet, while other projects in the community enable other features such as audio, dial-in, recording, and simulcasting. Jitsi supports popular protocols such as SIP, XMPP/Jabber, ICQ/AIM, Windows Live, Yahoo!, Google Hangouts, OTR, ZRTP and more.
LavaLife
Lavalife is an online dating application available for your mobile device and the browser. Lavalife puts the excitement back into dating by matching your interests with others to help you break the ice and find someone that matches your life. Since 2001, Lavalife has been committed to helping its members find dates and soul mates that last for an eternity.
Telegram X
Telegram X is a development version of the chat application Telegram. The goal of Telegram X is to reinvent Telegram and explore new frontiers in speed, ease of use, quality of animations, and all other aspects surrounding online communication. Telegram X is an experimental app that may or may not eventually replace the existing official Telegram, or simply used as a public beta test.
Viber
Viber is a cross-platform voice over IP application that allow people to make free and secure calls and messages to anyone, anywhere. With Viber, you can create group chats and make group calls, send stickers and emojis over chats that are 100% synced between devices, including 1-tap transfer of calls. Viber is available for free on Android, iOS, macOS, Linux and Windows.