Wire is described as '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' and is a very popular instant messenger in the social & communications category. There are more than 100 alternatives to Wire for a variety of platforms, including Android, iPhone, Web-based, Windows and iPad apps. The best Wire alternative is Signal, which is both free and Open Source. Other great apps like Wire are Telegram, Element, Discord and Tox.
Tinfoil Chat (TFC) is a FOSS+FHD peer-to-peer messaging system that relies on high assurance hardware architecture to protect users from passive collection, MITM attacks and most importantly, remote key exfiltration.
VIPole is a Secure Instant Messenger for secure messaging, encrypted voice/video calls, group chats that provides highly secure and strongly encrypted environment for all your communications and files you exchange over internet.
Confide lets you take your messages off the record:
Smoke Messenger is an open-source Instant Messenger that is known as the first mobile Messenger worlwide using the encryption algorithm McEliece. To be downloaded at F-Droid.org or Github.com. Smoke provides with its own Server-Software: SmokeStack-Echo-Server.
Common Ground is a browser-based, open-source social platform for communities, built as a robust alternative to Discord.
Offers free global video and voice calling, group chat with up to 50 participants, in-app messaging that bypasses SMS plans, music clip sharing via Spotify, photo editing, gaming and gifts, animated messages, mini-games during calls, and centralized media gallery.
Grow a community, connect with your friends, or whatever you're capable of with Adapt, a lightweight and customizable messaging platform which favors your privacy.
Remotely is a suite of essential business applications including chat, video conferencing, office apps and more which will help you work from anywhere. The suite includes full-featured Zoho tools like Cliq, Meeting, ShowTime, WorkDrive and many more.
White Noise aims to be the most secure private chat app on Nostr, with a focus on privacy and security. Under the hood, it uses the Messaging Layer Security (MLS) protocol to manage group communications in a highly secure way.
Virtual phone system for businesses with inbound and outbound calls, CRM integrations, virtual phone numbers, SMS and more.
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