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    • Free PersonalProprietary
    • Online
    • Windows Mobile
    • Android
    • iPhone
    • Blackberry
    • Windows Phone
    • Android Wear
    Group messaging platform owned by Microsoft. It's absolutely free, whether you're talking to a group of friends, or texting with one person. Best of all, it works on nearly every phone, via push or SMS. With GroupMe, it's easy to reach anyone, anytime, anywhere.
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    • FreeProprietary
    • Android
    • Android Tablet
    Full-featured XMPP messenger.
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    • FreeOpen Source
    • Online
    • Self-Hosted
    DogeHouse is taking voice conversations to the moon 🚀.

    Discontinued

    The maintainer of the project is “done with DogeHouse”. See video https://youtu.be/I8PkQgPiSq8

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  1. Skype Lite lets you send free text messages and make voice & video calls even under limited network conditions. Stay connected Skype Lite is optimized for 2G and unstable network connections, so you can stay connected with friends and family.
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    • FreeProprietary
    • Android
    • iPhone
    • Android Tablet
    • iPad
    YeeCall Messenger brings you amazing HD Video Call with retouch filter, crystal clear Voice Call, free Conference Call with up to 20 people, fastest and the most stable Messenger you ever have!
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  2. Emerald was built to help people meet each other. In the modern world it's so fast paced it's often really hard to meet new people.
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    • FreemiumProprietary
    • Android
    • iPhone
    • Windows Phone
    • Apple Watch
    • Android Wear
    Turn your phone into a Walkie Talkie. Don't waste time on phone calls and voicemails.
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  3. With group calls up to 256 users, Video4sure is an easy way to make video calls or setup group meetings. No need to register, install or pay. As soon as you visit the home page, it generates a unique invite link that you can share with your contacts.
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  4. With Stream’s chat react components, SDKs, and UI kits, product teams can unleash chat on web, or as a mobile app, with just a few lines of code. Maximize development bandwidth with Stream’s flexible backend messaging API and front-end components.
  5. Ziggs is a platform that exists to facilitate peoples communications. Ziggs is like a meeting point with your devices, it helps you to transfer content between your devices smoothly. Drag-and-drop PDFs, images, videos, APK apps and other files directly into Ziggs.
  6. Echoplexus is an anonymous, web-based, IRC-like chatting platform that makes its best effort to respect your privacy. It allows you to create public or private channels. You can encrypt your chats. You can secure a pseudonym for linkable anonymity.

    Discontinued

    Not actively maintained

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  7. Fleep is a messenger for your teams and projects. It enables communication within and across organizations - be it your team chats, project communication or 1:1 conversations.
  8. Spark is an Open Source, cross-platform IM client optimized for businesses and organizations. It features built-in support for group chat, telephony integration, and strong security.
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  9. Team.video helps remote teams have happier, more productive meetings by offering user friendly video meetings with agendas, collaborative notes, and emoji responses. No download required and it’s free to use.
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  10. Free secure Germany-based messenger available for iOS, Android and Windows Phone. Sicher has true end-to-end encryption of both text messages and file attachments.
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