Gajim is an open-source XMPP and Jabber messaging client for Windows. It brings individual chats, group conversations, contact management and file transfers into one desktop application. Support for OMEMO, OpenPGP and OTR provides encryption options, while plugins and themes let users add functions or adjust the interface. It can connect with other compatible XMPP services.
| Author: | Gajim Team |
| License: | Open Source |
| Price: | FREE |
| Released: | Apr 20, 2026 |
| File size: | 136.00 MB |
| Downloads: | 449 |
| Keywords: | Windows 10 compatibility, xmpp file transfer, chat client, messenger, Jabber, jabber messenger, Secure communication software, instant messenger, message, group chat client, secure messaging app, xmpp chat client, open source messenger, Open-source application, Gajim Team software, XMPP protocol, Jabber client, Gajim instant messaging |
| Author URL: | https://gajim.org/ |
Gajim is an open-source instant messaging client for XMPP, also known as Jabber. It is intended for people who want to chat through an XMPP account and communicate with contacts on compatible services rather than rely on a single closed messaging network. Gajim brings conversations, contacts and group chats into a desktop interface, with support for Windows as well as macOS and Linux.
The client supports individual and group conversations over XMPP. Users can organize contacts and manage multiple chats from the application, while group chat support provides a shared space for discussions. File transfers let participants send files through their conversations. For private messaging, Gajim supports OMEMO, OpenPGP and OTR encryption methods, which can be used to protect chats when the account and the other participant support the chosen method. Its XMPP compatibility also makes it possible to connect with people using other clients and services that implement the protocol.
Plugins extend the client with additional functions, and themes can change its appearance. This makes Gajim adaptable to different workflows: a user can keep the standard interface for everyday messaging or add extensions for specific needs. Contact management and multiple chat windows help keep separate conversations accessible without needing a separate application for each contact or group.
Gajim can be used for personal conversations, group coordination and messaging in organizations that use XMPP. Its support for encryption and file transfers suits users who need more than basic text chat, while interoperability is useful for teams and communities spread across different XMPP services. Voice and video communication are also among the supported capabilities, depending on the relevant setup and compatible participants.
Gajim is free and open source. The Windows download supports Windows 10 and Windows 11, including 32-bit and 64-bit systems. Because XMPP is a network protocol, users connect through an XMPP account; the service and its features can depend on the account provider. Encryption likewise requires compatible support on both ends of a conversation. Plugins provide optional extensions for users who want to adjust the client beyond its core messaging features.