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  1. BigBlueButton enables universities and colleges to deliver a high-quality learning experience to remote students.
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    • FreemiumProprietary
    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Windows S
    • Android Tablet
    • HUAWEI AppGallery
    • Windows Phone
    • iPad
    • Blackberry 10
    • Apple Watch
    With Viber, everyone in the world can connect. Freely. More than 460 million Viber users text, make HD-quality phone and video calls, and send photo and video messages worldwide over WiFi or 3G - for free.
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  2. Threema is a new mobile messaging app that puts security first. With true end-to-end encryption, you can rest assured that only you and the intended recipient can read your messages.
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  3. Microsoft Teams is the chat-based workspace in Office 365 that integrates your team's people, content, and tools to be increase engagement and efficacy.
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  4. Metastream allows you to watch internet videos with friends. It synchronizes media on websites so you can watch together. Watch or listen together: Start a session and invite your friends by sharing your friend code with them.
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  5. Conversations is a privacy focused, open source XMPP Texting [Jabber] client for Android 4.0+ smart phones with wife-approved easy encryption [OTR, OMEMO, or GPG].
  6. An open-source decentralized and encrypted messaging app even without internet connection via Wi-Fi and Bluetooth. Messages are stored securely on your device, not in the cloud. Connect directly with nearby contacts - no Internet access is required.
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  7. TeamSpeak is a proprietary Voice over IP software that allows users to speak on a chat channel with other users, much like a telephone conference call. A TeamSpeak user will often wear a headset with an integrated microphone.
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  8. Facebook Messenger is a faster way to message. Reach friends right on their phones, get and send messages fast, message everyone at once and more.
  9. Delta Chat looks and feels like other popular messenger apps, but does not involve centralized control, tracking or selling you, friends, colleagues or family out to large organizations. "Privacy by Design" has never been more fun.
  10. Communication is critical. Privacy is essential. Simple, just how you like it. Revolt is built on the same technologies as other popular chat applications, so there won’t be any need to re-learn on how to use it. Also, you can customize it to your heart’s content.
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  11. Google Voice gives you one number for all your phones, voicemail organized in an email format, free US long distance calls, low rates on international calls, and many free calling features, including transcripts, call blocking, call screening, conference calling, SMS, and more.
    • Free PersonalOpen Source
    • Online
    • Android
    • iPhone
    • iPad
    • Self-Hosted
    • Nextcloud
    Nextcloud Talk is a fully self-hosted audio/video and chat communication service. It features web and mobile apps and is designed to offer the highest degree of security while being easy to use.
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  12. Bring your workspace together into one unified app. It’s everything your team has been looking for in a productivity and messaging app, but easier, and all with your email. Welcome to the shortest path to done.
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  13. An advanced gaming chat platform competitor to Discord with features like calendars, advanced voice chat, and forums to better manage and grow your gaming communities.