Cost / License
- Freemium
- Open Source
Application types
Platforms
- Mac
- Windows
- Linux
- Android
- iPhone
- Android Tablet
- iPad
- F-Droid




Dialog Messenger is described as 'Customized self-hosted platform usable across multi operation systems simultaneously. dialog provides SDK tools for client interface as well as for server' and is a instant messenger in the social & communications category. There are more than 100 alternatives to Dialog Messenger, not only websites but also apps for a variety of platforms, including Android, iPhone, Windows and Mac apps. The best Dialog Messenger alternative is Signal, which is both free and Open Source. Other great sites and apps similar to Dialog Messenger are Element, Gmail, Discord and Matrix.




Google Groups is all about helping users connect with people, access information, and communicate effectively over email and on the web. Now theres a new version on the block. We didnt want to say it, but yes, its new and improved.

Speek! is the first messenger that is anonymous and censorship-resistant by design. Speek! messenger encrypts all messages and is secure, private and decentralized.












Sphinx.chat lets you use your lightning node to talk to anyone else who is running lightning and a sphinx compatible chat client.




Real-time chat platform structured with threads, custom feeds, project tagging, and AI moderation. Provides privacy controls, instant file and code sharing, multiple viewing modes, moderator tools, light/dark modes, and unifies collaboration for organizations and communities.

Unlimited public or private chat rooms with full search, GitHub-based authentication, file and code sharing, flexible integrations with popular developer tools, admin controls, guest access, multi-platform support, data export, and ad-free collaboration spaces.


hack.chat is a minimal, distraction-free chat application. Channels are created and joined by going to https://hack.chat/?your-channel. There are no channel lists, so a secret channel name can be used for private discussions.
Source code : https://github.com/hack-chat/main.

TeleGuard is the data-secure messenger from Swisscows. TeleGuard encrypts every message and all telephone calls with encryption algorithm currently available: SALSA 20. TeleGuard servers are located in Switzerland, they are not subject to the data protection laws of the EU /...




Fully open source instant messaging server and clients. No proprietary components or non-free dependencies. Backend in pure Go (GPL 3.0), with a command-line administration tool in python + gRPC. Clients for Android, iPhone, and Web - ReactJS (all licensed under Apache 2.0).




Web conferencing tool provides real-time collaboration, scheduled meetings, automated transcripts, enterprise features like Microsoft integration, up to 100 users, business messaging, call routing, multi-channel team and customer voice communication solutions.



