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Rambox - Messaging and Emailing app that combines common web applications into one
Rambox is a messaging and emailing app that combines common web applications into one. It gives you the possibility to add common services many times you need, all in one place. It's perfect for people who work with many services for business and private accounts.
instant-messaging messaging email gmail skype whatsapp microsoft-teams outlook facebook slackOpenmeetings - Open Source Web Conferencing
Openmeetings provides video conferencing, instant messaging, white board, collaborative document editing and other groupware tools using API functions of the Red5 Streaming Server for Remoting and Streaming.
web-conferencing meetings conference video-conference instant-messaging streaming desktop-sharingZimbra - Email and Collaboration Suite
Zimbra is the most capable open source email and collaboration suite available today. It provides support for Email, Shared calendar, Document management, Pop3, Address book and lot more. Mails could be tagged and search support is also provided. Zimbra is considered as an alternative to Microsoft Exchange Server.
mail-server groupware instant-messaging smtp pop3 imap document-management dmsCitadel
Citadel is a collaboration suite (messaging and groupware). It provides support for Email, Calendaring/Scheduling, Address books, Bulletin boards, Mailing List Server, Instant Messaging, Wiki, Multiple domain support.
mail-server groupware bulletin-board mailing-list wiki instant-messaging smtp pop3wire-android - :phone: Wire for Android
This repository is part of the source code of Wire. You can find more information at wire.com or by contacting opensource@wire.com.You can find the published source code at github.com/wireapp/wire.
wire android chat instant-messaging im android-appswire-ios - 📱 Wire for iOS (iPhone and iPad)
This repository is part of the source code of Wire. You can find more information at wire.com or by contacting opensource@wire.com.You can find the published source code at github.com/wireapp/wire.
wire ios otr security privacy audio instant-messaging video messenger messenger-platform end-to-end encryption swift-3 mobile mobile-app communication app wire-iosSignal-Android - A private messenger for Android, alternative to WhatsApp
Signal is a messaging app for simple private communication with friends. Signal uses your phone's data connection (WiFi/3G/4G) to communicate securely, optionally supports plain SMS/MMS to function as a unified messenger, and can also encrypt the stored messages on your phone.
chat instant-messaging im secure-chat whatsapp-alternativeGitter - Community for Software Developers
Gitter is designed to make community messaging, collaboration and discovery as smooth and simple as possible. You can easily create, organise and grow your communities, inviting others to join just in one click. Gitter is an instant messaging and chat room system for developers and users of GitHub repositories. Gitter is similar to IRC and Slack. Unlike IRC, and like Slack, it automatically logs all messages in the cloud.
chat instant-messaging im slack-alternative secure-chatRiot - Messaging and Colloboration made easy
Riot is built on top of Matrix. Matrix is an open network for secure, decentralized communication delivering a community of users,bridged networks, integrated bots and applications plus full end-to-end encryption. Riot allows teams to communicate across a wide range of collaboration apps. If some team members use Riot while others use IRC, Slack or Gitter, Riot will allow these team members to seamlessly work together. Riot offers the richest network of communication bridges.
instant-messaging chat secure-chat mobile-apps group-chat colloboration voip video-conferenceZulip - Group Chat
Zulip is a powerful, open source group chat application. It supports both private messaging and group chats via conversation streams. Zulip also supports fast search, drag-and-drop file uploads, image previews, group private messages, audible notifications, missed-message emails, desktop apps, and much more.
chat im instant-messaging group-chat collaborationMongooseIM - Efficient XMPP server
MongooseIM is aimed at large, complex enterprise level projects where real-time communication is critical for business success. It provides high availability, ease of deployment, development and reliability in production. MongooseIM can accept client sessions over vanilla XMPP, Websockets, and HTTP long-polling (a.k.a. BOSH).
xmpp instant-messaging chat multi-user-chat messaging websocketsMatrix - Decentralized group communication
Matrix is an open standard for decentralised communication, providing simple HTTP APIs and open source reference implementations for securely distributing and persisting JSON over an open federation of servers. It can be used for Decentralised Group Chat, WebRTC signalling, Internet of Things, VOIP etc.
voip webrtc skype-alternative video-conference slack-alternative instant-messaging chatChatSecure - Encrypted chat client for iOS and Android
ChatSecure is a instant messaging client for iOS and Android that integrates encrypted OTR ("Off the Record") messaging support from the libotr library and the XMPPFramework to handle Jabber/GTalk (XMPP).
instant-messaging chat secure-chat im-client jabber xmpp mobile-appsriot-android - A glossy Matrix collaboration client for Android
Riot is an Android Matrix client.This client is a standard android studio project.
chat instant-messaging im android-appsKontalk - Instant Messaging Network
Kontalk is run by a community of volunteers offering servers. Both client-to-server and server-to-server channels are fully encrypted. Users can be safe with end-to-end encryption. This is the official Android client for the Kontalk messaging system.
messaging chat instant-messaging im secure mobile-im0fc - End-to-end discreet web chat with strong cryptography
0fc enables you to run a secure in-browser group chat with isolated chatrooms. Server is considered minimal trusted zone, all important operations happen on client side. Ephemeral keys used to protect chat room traffic are generated within room owner's browser and propagated to the rest. It is built on top of built on top of Themis crypto library.
chat chat-server secure-chat web-chat instant-messagingLets-Chat - Self-hosted chat for small teams
Let's Chat is a persistent messaging application that runs on Node.js and MongoDB. It's designed to be easily deployable and fits well with small, intimate teams. It supports XMPP Multi-user chat (MUC), Multiple rooms, File uploads and lot more.
chat instant-messaging messaging im xmpp self-hosted slack-alternativeCryptocat - Encrypted Chat
Cryptocat is free software that aims to provide an open, accessible Instant Messaging environment that encrypts your conversations and works right in your browser. It uses the OTR protocol over XMPP for encrypted two-party chat and the (upcoming) mpOTR protocol for encrypted multi-party chat.
chat secure-chat cryptography security privacy im-client instant-messagingOff-the-Record Messaging Provides Private Conversations Over IM
Off-the-Record (OTR) Messaging allows you to have private conversations over instant messaging by providing encryption, authentication, deniability, and perfect forward secrecy. If you lose control of your private keys, no previous conversation is compromised.
chat secure-chat cryptography security privacy im-client instant-messagingInstantbird - Instant Messaging
Instantbird is a cross platform instant messaging software. It supports various protocols and using this software you could use Facebook, Twitter, Google talk, IRC chat and lot more.
instant-messaging chat social social-messaging