Alternatives to AstraChat

Slack

Slack is a business and enterprise communication platform used by millions of people around the world. It is designed to help teams stay productive and connected. Slack provides an easy-to-use platform for users to communicate with each other in real-time, with features such as g...

Pidgin

Pidgin is an open source, cross-platform messaging and chat client software used for instant messaging and real-time communication. It allows users to communicate with other people over multiple protocols, including AIM, ICQ, Google Talk, Jabber/XMPP, MSN Messenger, Yahoo! Messen...

WhatsApp Messenger

WhatsApp Messenger is an app that allows users to send and receive messages, make voice and video calls, share photos, documents, location and other media, all over the internet. It is available for both iOS and Android devices. WhatsApp Messenger is primarily focused on securit...

Riot.im

Riot.im is an open source, secure, and decentralized communication platform for teams, communities, and individuals. It can be used as a communication tool for anything from remote work collaboration to video conferencing, text chat, voice calls, and file sharing. Riot.im is desi...

Jitsi

Jitsi is an open-source, multi-platform, video conferencing, and collaboration software that enables users to communicate securely and easily with anyone, anywhere. It offers several features, such as one-click video and audio conferencing, screen sharing, and file sharing, that ...

Mattermost

Mattermost is a self-hosted, open source, private cloud-based messaging platform designed for teams and organizations. It is designed to provide an easy-to-use and secure collaboration platform for organizations of any size. It provides rich features such as real-time messaging, ...

TeamSpeak

TeamSpeak is a voice chat application for gaming and other online activities. It allows users to communicate using their microphone and speakers, or an external headset. It is available for a range of operating systems, including Windows, macOS, Linux, iOS, Android, and web brows...

Rocket.Chat

Rocket.Chat is a cloud-based collaboration platform that enables teams to communicate and collaborate in real-time. It is an open source, self-hosted solution that provides users with a wide range of features, including instant messaging, video conferencing, file sharing, voice a...

Zulip

Zulip is an open source, real-time collaboration software and application designed to help teams communicate more effectively and efficiently. It provides an array of features such as instant messaging, threaded conversations, file sharing, and searchable archives. Zulip also off...

Trillian

Trillian is an instant messaging and collaboration platform that allows users to communicate with their contacts across multiple networks. It provides a unified messaging experience, letting users message and collaborate with contacts from different networks in the same applicati...

ChatSecure

ChatSecure is an open-source, secure and private instant messaging app for iOS and Android devices. It allows users to communicate securely over any network and is compatible with many other messaging protocols. ChatSecure uses end-to-end encryption to protect messages from being...

HipChat

HipChat is a cloud-based team messaging and collaboration platform that helps teams to stay connected and organized throughout the day. It enables members to communicate in real-time through private and group chat rooms, and also provides the ability to share files, set reminders...

Discontinued https://alternativeapp.info/software/slack/ is acquiring Hipchat and https://alternativeapp.info/software/stride-by-atlassian/ from Atlassian. services will be discontinued after February 15, 2019. https://www.atlassian.com/partnerships/slack

Guest

Imo

Imo is a mobile application and website that enables users to communicate with each other through text and video messaging, voice calls, and video calls. It has a wide range of features, including group chats, multimedia sharing, free stickers, voice and video messages, and voice...

Let's Chat

Let's Chat is a secure, cloud-based messaging and collaboration platform designed to make communication easier and more efficient in the workplace. It enables users to create and manage multiple chat rooms, share files, and collaborate on tasks within the app. It offers features ...

Discontinued As noted at https://github.com/sdelements/lets-chat/issues/781, the project is no longer in development as of August 2017. The latest version, 0.4.0, released in June 2015, can still be downloaded from GitHub along with the source code.

Guest

Google Allo

Google Allo is a communication and security app developed by Google. It allows users to communicate with their contacts through text, audio, and video messages, as well as share images and videos. The app also offers a range of security and privacy features, such as end-to-end en...

Discontinued Will be completely closed in March 2019. See message at https://allo.google.com/

Guest

Xabber

Xabber is a free, open source cross-platform instant messaging and group chat application that supports multiple protocols such as XMPP (Jabber), Google Talk, Facebook, Vkontakte, LiveJournal and ICQ. The app allows users to send and receive instant messages, create group chats, ...

YakYak

YakYak is an anonymous messaging app that allows users to connect with others in real-time. It is available for both Android and iOS devices. With YakYak, users can join different chat rooms and start conversations with people from all over the world. The app also provides a grea...

Disa

Disa is a free, all-in-one communication platform that enables users to connect with one another through messaging, voice and video calls, and file sharing. It integrates with popular messaging and communication services such as SMS, Facebook Messenger, WhatsApp, and Twitter, all...

Flock

Flock is a cloud-based collaboration and communication platform designed to help businesses of all sizes stay connected and productive. It offers a range of features, such as group chat, video conferencing, file sharing, task management, and more. With Flock, teams can have conve...

IM+

IM+ is an online services software and applications that provides users with instant messaging, audio/video calls, social media integration, and online conference services. It is a cross-platform app that supports a wide range of devices and operating systems, including Android, ...

AstraChat

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