Open Source AstraChat Alternatives
The best open source alternative to AstraChat is Element. If that doesn't suit you, our users have ranked more than 50 alternatives to AstraChat and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to AstraChat are Pidgin, Mattermost, Rocket.Chat and Zulip.
AstraChat alternatives are mainly Group Chat Apps but may also be Instant Messengers or Encrypted Chat Apps. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of AstraChat.
- Freemium • Open Source
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- Android Tablet
- iPad
- Self-Hosted
- Matrix.org
- Cloudron
Element is a secure collaboration and messaging app based on the Matrix protocol. It’s decentralised to deliver digital sovereignty, and based on an open standard for easy connections and interoperability. It is end-to-end encrypted by default.
- Free • Open Source
- Mac
- Windows
- Linux
- BSD
- PortableApps.com
- Xfce
Pidgin is an easy to use, multi-protocol chat client client used by millions. Connect to AIM, MSN, Yahoo, XMPP, and more chat networks all at once. It has built-in support for NSS, offering client-to-server message encryption for protocols that support it.
- Freemium • Open Source
- Mac
- Windows
- Linux
- Android
- iPhone
- Android Tablet
- iPad
- Self-Hosted
- JavaScript
- Go (Programming Language)
- Cloudron
Mattermost is a secure, open source platform for communication, collaboration, and workflow orchestration across tools and teams.
- Freemium • Open Source
- Mac
- Windows
- Linux
- Android
- iPhone
- iPad
- Self-Hosted
- Cloudron
Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework.
- Free Personal • Open Source
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- Android Tablet
- BSD
- iPad
- Self-Hosted
Zulip is a group chat app in which messages are threaded by topic, helping you have long-running, organized conversations.
Open source Jabber (XMPP) client with multi-account support, clean and simple interface. Being both free (as in freedom!) and ad-free, Xabber is designed to be the best Jabber client for Android .
Discontinued
The project seems no longer developed since 2019. Last version, 2.6.6, released in October 2019, can be still downloaded from F-Droid, it's no longer available on Google Play Store
- Free • Open Source
- iPhone
- iPad
ChatSecure is a free and open source messaging app that features OTR encryption over XMPP. You can connect to your existing accounts on Facebook or Google, create new accounts on public XMPP servers(including via Tor), or even connect to your own server for extra security.
- Free • Open Source
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- Android Tablet
- iPad
- Self-Hosted
Corteza Messaging is a secure, high performance, open source Slack alternative that allows your teams to collaborate more efficiently, as well as communicate safely with other organisations or customers.
Desktop client for Google Hangouts.
- Free • Open Source
- Online
- Android
- iPhone
- Self-Hosted
- Software as a Service (SaaS)
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).
