Zulip

Zulip is a group chat app. Its most distinctive characteristic is that messages are threaded by topic, helping you have long-running, organized conversations.

Free
Open Source
Mac OS X
Windows
Linux
Android
iPhone
BSD
Web
Self-Hosted

zulip is a group chat app.

its most distinctive characteristic is that messages are threaded by topic, helping you have longrunning, organized conversations. zulip's threading makes it easy for people not always on chat (like managers, remote team members, contractors, parttime workers, etc) to weigh in on questions and decisions, and for people in different timezones to effectively communicate. it also makes it easy to catch up on the 100s of messages a day that are typical for a busy user; since you can easily skim or ignore the threads that aren't relevant to you.

Links to official Zulip sites

GitHub
Twitter
Official Website

Features

MarkDown support Group chat Group collaboration Team Collaboration Chat Bot Community based Integrated File Sharing GitHub integration Threaded Conversations

The Best 56 Zulip Alternatives

group-chat filter is active.

971 Like

Telegram

Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free. It is like SMS, but more powerful. .

Free Mac OS X Windows Linux Android iPhone Web Blackberry Mac Windows Mobile

Portable Privacy protection Ad free Built in File transfer IFTTT integration Works Offline Share files Video calling Voice Call Cloud sync Multiple Account support Lightweight Group chat Multi Device Support Voice messages Search by tags Support for Themes Chat Bot Encrypted chat Photo Sharing Public groups chat Push to talk Anonymous Secure Filesharing End to end encryption Self destructing messages Share Videos Based on phone number Stickers Send Big files Portable Linux In Game Overlay Built in Photo editor Encrypted calls Encrypted VoIP calls GPS Location Tracking Messages in cloud Persistent History Secret chats
927 Like

Hangouts

Hangouts is a 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! "Hangouts" are places used to facilitate group video chat (with a...

Free Windows Android iPhone Android Tablet iPad Chrome OS Web Chrome

Voice Call Gmail integration Group chat Multi Device Support Texting Voice messages WebRTC
590 Like

WhatsApp Messenger

WhatsApp Messenger is a cross-platform mobile messaging app which allows you to exchange messages without having to pay for SMS.

Free Mac OS X Windows Android iPhone Android Tablet Web Blackberry S60

Built in File transfer Video calling Group chat Voice messages Encrypted chat End to end encryption Mobile friendly Based on phone number
567 Like

Slack

Slack brings all your communication together in one place. It's real-time messaging, archiving and search for modern teams.

Freemium Mac OS X Windows Linux Android iPhone BSD Web Apple Watch

Extensible by Plugins/Extensions IFTTT integration Share files Voice Call Real time collaboration Group chat Support for @mentions App integration Channel manager Group collaboration Multi Channel Onboarding Out Of The Box Reactions Team Collaboration Team work
459 Like

Discord

All-in-one voice, video and text chat for gamers that’s free, secure, and works on both your desktop and phone.

Freemium

Ad free Share files Share your screen Video calling Voice Call Low memory usage Group chat Night mode Channel manager Multi Channel Reactions Team Collaboration Browser based app Chat Bot Communities Feature Community based Custom roles Dedicated Server Hosting Development API Direct Messaging Encrypted chat Free voice/text servers Specific for Gaming In app server browser Interface Overlay Low bandwidth usage Low Latency Permission system Persistent Chat Photo Sharing Positional audio Public groups chat Push to talk Responsive design Single Sign On Text chat
343 Like

Tox

Send messages, files, create groups and make Tox to Tox audio and video calls. Securely.

Free Open Source Windows Linux Android iPhone Android Tablet BSD Mac

Privacy focused Security focused Ad free Built in player Share your screen Video calling Group chat Texting Encrypted chat Anonymous Secure Filesharing Client side encryption Decentralized End to end encryption Peer To Peer
324 Like

Signal

TextSecure and RedPhone have been merged to create Signal! Using Signal, you can communicate instantly while avoiding SMS fees, create groups so that you can chat in real time with all your friends at once, and share media or...

Free Open Source Mac OS X Windows Linux Android iPhone Android Tablet iPad Chrome

Privacy protection Security focused Built in File transfer Works Offline Video calling Voice Call Group chat Texting Voice messages Protected by Password Encrypted chat End to end encryption Cross platform Encrypted Connection Mobile friendly Self destructing messages Color coding Based on phone number Private messaging Encrypted calls Encrypted VoIP calls Forward Secrecy Send files Video chat (Encrypted)
287 Like

Viber

Viber is a mobile application that lets you make free phone calls and send text messages to anyone who also has the application installed. .

Freemium Mac OS X Windows Linux Android iPhone Android Tablet Windows RT Windows Phone

Video calling Voice Call Multiple languages Group chat Push to talk Secret chats Call Transfer Hidden chat
180 Like

Facebook Messenger

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.

Free Windows Android iPhone Android Tablet iPad Web Blackberry Apple Watch

Video calling Voice Call Group chat
153 Like

Glip

Glip is instant messaging for teams and businesses to communicate and get work done at the same time. In Glip you work where your conversations are, so you always know what your team is doing and what needs to get done next.

Freemium Mac OS X Windows Android iPhone Android Tablet iPad Web

Share your screen Google Drive integration Real time collaboration Group chat Onedrive integration Group collaboration Team Collaboration Team work Dropbox integration CRM Recurring tasks Built in File Manager Trello integration Shared calendars Social feed Bitbucket Integration Box.com integration Calendar view GitHub integration Mailchimp integration Meeting notes Zapier integration Zendesk integration
144 Like

Wire

Wire is a secure and private messenger for phones, tablets and desktop. Crystal clear voice and video calls, private group chats, file sharing, audio and video messages - everything is end-to-end encrypted.

Free Open Source Mac OS X Windows Linux Android iPhone Android Tablet iPad Web

Privacy focused Security focused Share your screen Video calling Voice Call Group chat WebRTC Encrypted chat Photo Sharing End to end encryption Integrated File Sharing Privacy Protected Encrypted calls Video chat (Encrypted)
113 Like

Mattermost

mattermost is an open source, self-hosted slack alternative.

Free Open Source Mac OS X Windows Linux Android iPhone Android Tablet iPad Self-Hosted

MarkDown support Group chat Slack integration Team Collaboration Integrated File Sharing Data API On premises software Plugin API
69 Like

Matrix.org

Matrix is an open standard for decentralized persistent communication over IP. It can be used for decentralised group chat, WebRTC signaling, IoT-data transfer, and generally to link together fragmented silos of communication.

Free Open Source Windows Linux Android iPhone Android Tablet iPad Web Mac

Real time collaboration Group chat WebRTC Team Collaboration Chat Bot Encrypted chat Decentralized End to end encryption Distributed GNU/linux libre Server side history
67 Like

Rocket.Chat

Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework.

Free Open Source Windows Linux Android iPhone Mac Self-Hosted Cloudron

Extensible by Plugins/Extensions Ad free Share your screen Group chat Voice messages Chat Bot Integrated File Sharing Location Mapping
59 Like

WeChat

WeChat is a complete mobile communication and private social networking app. Free, cross-platform, and full-featured, WeChat is the best way to keep in touch with everyone you care about.

Freemium Mac OS X Windows Android iPhone Android Tablet Blackberry Windows Phone S60

Video calling Multiple languages Sync Contacts Group chat Voice messages Photo Sharing Based on phone number Stickers
48 Like

Threema

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.

Commercial Android iPhone Android Tablet iPad Android Wear Windows Phone

Security focused Multiple languages Group chat Encrypted chat End to end encryption Encrypted email Integrated File Sharing Integrated App lock
39 Like

Conversations

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].

Free Open Source Android Android Tablet

Group chat Encrypted chat Decentralized End to end encryption Self destructing messages OTR Picture sharing
26 Like

KakaoTalk

KakaoTalk is a phone number based messenger service that allows users anywhere in the world to chat one-to-one or in a group for free.

Freemium Mac OS X Windows Android iPhone Android Wear Kindle Fire Blackberry Windows Phone

Voice Call Group chat Based on phone number Secret chats
24 Like

TribeScale

TribeScale is a startup that aims to enhance teamwork in companies through the improvement of communication, coordination, and the pace on the basis of targets set.

Free Mac OS X Windows Android iPhone iPad Web Self-Hosted

Real time collaboration Group chat Group collaboration Team Collaboration Team work Goal Tracking Goal setting
16 Like

Campfire

Campfire is a simple web-based real-time group chat tool for business. It makes real-time communication with 2-60 people as simple as visiting a web page. It’s elegant, easy, and web-based.

Commercial iPhone Web

Voice Call Group chat Team Collaboration Integrated File Sharing

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Zulip

Links to official Zulip sites

Features

Categories

Tags

The Best 56 Zulip Alternatives

Telegram

Hangouts

WhatsApp Messenger

Slack

Discord

Tox

Signal

Viber

Facebook Messenger

Glip

Wire

Mattermost

Matrix.org

Rocket.Chat

WeChat

Threema

Conversations

KakaoTalk

TribeScale

Campfire

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