Web Crossing, Inc. announced today that it is now shipping Web Crossing 5.0, the latest version of its collaboration server platform. The updated version offers new customization and extensibility architecture with appearance themes, page component options, plug-ins and more. Web Crossing 5.0 is designed for easy administrator control of the appearance and functionality of its collaboration tools, including a new WebFiles system for mirroring files from a browser. Web Crossing is priced on a traffic-based sliding scale model starting at US$295. Version 5.0 upgrades start at $119. The company also announced Web Crossing Express, a free Web Crossing Web/Mail/FTP server platform that runs on Mac, Windows, Linux, FreeBSD, Solaris and other Unix operating systems.