1. Desktop Clients:

• Pidgin: Pidgin is a free and open-source instant messaging client that supports multiple chat protocols, including XMPP. It is available for Windows, Linux, and macOS.
   
• Gajim: Gajim is a free and open-source XMPP client that offers end-to-end encryption and support for multiple platforms, including Windows, Linux, and macOS.
   
• Conversations: Conversations is a modern and secure XMPP client for desktop and mobile that offers end-to-end encryption, multi-account support, and other advanced features. It is available for Windows, Linux, and macOS.

2. Smartphone Clients:

• Conversations: Conversations is a popular XMPP client for Android smartphones that offers end-to-end encryption, group chat support, and other advanced features.
   
• ChatSecure: ChatSecure is a free and open-source XMPP client for iOS and Android smartphones that offers end-to-end encryption, OMEMO encryption, and other security features.
   
• Xabber: Xabber is a free and open-source XMPP client for Android smartphones that offers multi-account support, chat history backup, and other features.

It is worth noting that there are many other XMPP clients available for both desktop and mobile use, and users should choose the client that best meets their needs and preferences.

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