Ideal for a wide range of entry-level and departmental workloads such as network, file, print, mail, and web servers.
Based on the Linux 2.6 kernel, Red Hat Enterprise Linux 4 represents the most stable and mature commercial Linux available.
Red Hat proved the enterprise-class readiness of much of the 2.6 kernel
technology in the Enterprise Linux 3 release. As a result, Red Hat
Enterprise Linux 4 includes mature technology deployed successfully by
many Red Hat customers and incorporates a number of key improvements.Red Hat Enterprise Linux 4 includes core desktop applications such as:Firefox, the new web browser that is taking the world by stormOpenOffice, a high-productivity, multi-platform, open source Office suiteEvolution, the most popular email and calendaring solution for LinuxIn
addition, popular media applications such as Real Player and Acrobat
Reader are included. Citrix and the open source Rdesktop application
allow users to connect to a Windows terminal server to achieve
heterogeneous remote desktop solutions. Other features include support
for 15 languages, the GNOME 2.8 desktop suite and development platform,
and robust new plug-and-play hardware support.
Product Brochure: http://www.redhat.com/f/pdf/rhel4/RHELOverviewV4.pdf