Hangouts is described as '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!' and is a leading instant messenger in the social & communications category. There are more than 100 alternatives to Hangouts for a variety of platforms, including Android, iPhone, Web-based, Windows and iPad apps. The best Hangouts alternative is Signal, which is both free and Open Source. Other great apps like Hangouts are Telegram, Element, Discord and Matrix.
Open source decentralized communication platform supporting secure end-to-end encrypted calls, messaging, group conferencing, file and media sharing, SIP compatibility, multi-device sync, and strong privacy, available across desktop and mobile systems.
Jitsi Desktop (previously SIP Communicator) is a legacy audio/video and chat communicator with full encryption, precedessor of Jitsi Meet .
Threaded group conversations combine live and asynchronous messaging, separating topics for organized collaboration, supporting open-source, cloud, and self-hosted deployments, secure communication with encryption, and multi-platform access for diverse teams.
Provides a chat experience over email, with all messages and contacts stored on user devices, open source code, group media support, and compatibility with any provider. No central servers, no tracking, works without SIM, and can be used by anyone just via email.
Offers secure messaging with end-to-end encryption, unlimited free calls, group chats for up to 250 members, rich media sharing, emoji reactions, AR lenses, self-destruct messages, affordable international calls, community channels, and robust privacy across devices.
Provides video conferencing with high-quality video and screen sharing, supporting up to 100 participants, real-time whiteboard collaboration, group messaging, and VoIP. Compatible across devices including smartphones and PCs, offering flexibility for remote meetings.
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].
Privacy orientated.
Very well coded with end to end encryption and very robust.
Provides comprehensive communication features including group video calls, voice calls, fast messaging, photo sharing, and location mapping. Access through mobile and web platforms with real-time notifications, ensuring seamless interactions using multimedia tools.
Messenger is more popular than Hangouts because more people use Facebook than Google+, Google's social network. I wish more people were on Google+, though. It and Hangouts are so much better than Facebook.
A digital workspace organizer that allows you to unify as many applications as you want, all in one place. It is perfect for those who care about productivity while working with many business and personal apps.
Trillian is an instant messaging app that works on phones, tablets, and desktops while keeping your chats neatly synchronized between all of them! We think conversation should be easily shared between all of your devices, not trapped as text messages on your phone.
BigBlueButton enables universities and colleges to deliver a high-quality learning experience to remote students.
Centralize multiple chat and messaging services in one customizable interface, organize workspaces, receive synchronized notifications, manage multiple accounts per service, and easily access popular platforms on Mac, Windows, and Linux. Privacy controls included.
It's not owned by Google and therefore there is a higher chance that any data passing through it will remain private and/or the content of those message is less likely to be used by the company for their own purposes (Google's T+Cs give them the rights to use ANY of your content hosted with them in ANY way they see fit).
Canada
United States
Germany
EU
Japan
Argentina
Austria
Streams and topics instead of groups