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    Telegram is a messaging app created by former VK creators with a focus on speed and security. It’s superfast, simple and free. It is like SMS, but more powerful.
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  1. Signal is a messaging app with an unexpected focus on privacy, combined with all the features expected from a modern IM app. Signal has received a lot of praise from all around the world for its security and privacy-respecting technologies.
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  2. Thunderbird is a free, open source, cross-platform e-mail, news and instant messaging client. The project strategy is modeled after Mozilla Firefox.
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  3. Element is a secure collaboration and messaging app based on the Matrix protocol. It’s decentralised to deliver digital sovereignty, and based on an open standard for easy connections and interoperability. It is end-to-end encrypted by default.
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  4. Jitsi (previously SIP Communicator) is an audio/video and chat communicator with full encryption that supports protocols such as SIP, XMPP/Jabber, ICQ/AIM, Windows Live, Yahoo!, GTalk/Hangouts extensions, as well as OTR, ZRTP, etc.
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    • FreemiumProprietary
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    Skype is the most popular free voice-over IP and instant messaging service globally. It allows users to text, video and voice call over the internet. Users can also call landlines and mobiles at competitive rates using Skype credit, premium accounts and subscriptions.
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    • FreeOpen Source
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    • Self-Hosted
    • WebRTC
    • Python
    • JavaScript
    • Go (Programming Language)
    • Cloudron
    • Java
    • Perl
    Matrix defines a set of open APIs for decentralised communication, suitable for securely publishing, persisting and subscribing to data over a global open federation of servers with no single point of control.
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  5. With the rise of widespread government monitoring programs, Tox is an easy to use application that allows you to connect with friends and loved ones without anyone else listening in.
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    • Free PersonalOpen Source
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    • Self-Hosted
    • Software as a Service (SaaS)
    Wire is the most secure collaboration platform featuring messenger, voice, video, conference calls, file-sharing, and external collaboration –all protected by the most secure end-to-end-encryption. Why Wire?
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  6. Pidgin is an easy to use, multi-protocol chat client client used by millions. Connect to AIM, MSN, Yahoo, XMPP, and more chat networks all at once. It has built-in support for NSS, offering client-to-server message encryption for protocols that support it.
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  7. Hangouts is a messaging app that lets you send and receive messages, photos and more, and even start free video and voice calls – one to one or with a group!
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  8. Zoom is a video communication company that provides remote conferencing services that combines video conferencing, online meetings, chat, and mobile collaboration.
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  9. We are a free and open-source platform to launch your digital brand, social network and mobile app. We are also a social network ourselves. It is a global social network of social networks. Available in either decentralized or centralized options.
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  10. Whether you’re between meetings or in line for a latte, use Asana to quickly capture tasks, to-dos, reminders, and ideas. Get updates from coworkers, organize tasks and projects for work, or manage your to-do list for the day.
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  11. Hard-fork of Franz, adding awesome features and removing unwanted ones.
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