Swift
Swift's clean design and comprehensive feature set make it the logical choice for anyone looking for a cross-platform XMPP client. Swift is free to use, with optional commercial support contracts available from Isode.
Swift XMPP Client
Combining ease of use with a comprehensive feature set, Swift is suitable for single-user use and large-scale deployments in security conscious environments. Features include easy status setting, security label support, keyword/phrase highlighting and message acknowledgement.
Swiften C++ SDK
Swiften is a robust, high-quality, standards-compliant, cross-platform, and performant C++ library for implementing XMPP applications. By default Swiften is licensed under the GNU General Public License.
Stroke Java SDK
Stroke is a native Java (no JNI) port of the Swiften C++ library for implementing XMPP applications. By default Stroke is licensed under the GNU General Public License.
Available for OS X, Windows & Linux
Download the latest Swift packages for Windows and Mac OS X here or visit the downloads page for instructions on obtaining Swift for Linux.