Zeus Web Server

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Zeus Web Server is a discontinued proprietary web server for Unix and Unix-like platforms (including Solaris, FreeBSD, HP-UX and Linux). It was developed by Zeus Technology, a software company located in Cambridge, England. The original authors and company founders are University of Cambridge graduates Damian Reeves and Adam Twiss.

Support for AIX, Tru64, and Mac OS X was dropped on 10 June 2008.[1] No new ZWS releases have been made since January 2010,[2] and the company no longer offers a similar server solution. In July 2011, the company was acquired by Riverbed Technology,[3] who ended support for ZWS on November 30, 2014.[4]

Zeus was designed to be a high-performance web server[5] and was commonly used by hardware vendors submitting SPECweb99 benchmarks for their hardware.[6] The SPECweb99 benchmark was retired in 2005 and replaced by SPECweb2005.[7] While some SPECweb2005 submissions were made using Zeus, by 2008 it was no longer among the top performers.[8]

In addition to static content serving, Zeus supported dynamic content via CGI, FastCGI, Apache JServ, ISAPI, NSAPI, mod_perl, SSI and Zeus Distributed Authentication and Content (ZDAC), a proprietary FastCGI-like protocol. While Zeus mainly competed with other commercial web servers such as Oracle iPlanet Web Server, it also included a high degree of compatibility with Apache HTTP Server (including .htaccess support and a URL rewriting system comparable to Apache's mod_rewrite), with the expectation that Apache users would migrate to Zeus as their server load increased.[9] NSAPI and ISAPI were added to ease migrations from Microsoft IIS and Sun Java System Web Server.

See also[edit]


  1. ^ "Archived copy". Archived from the original on November 6, 2012. Retrieved December 21, 2008.CS1 maint: archived copy as title (link) CS1 maint: unfit URL (link)
  2. ^ "Archived copy". Archived from the original on November 21, 2012. Retrieved May 23, 2012.CS1 maint: archived copy as title (link) CS1 maint: unfit URL (link)
  3. ^ "Riverbed Expands IT Performance Business with Acquisition of Zeus Technology". Riverbed Technology. Retrieved 8 September 2013.
  4. ^ "Hardware & Software End of Life Policy". Riverbed Technology. Retrieved 10 February 2014.
  5. ^ "Web Server Software". Zeus. Retrieved 2008-12-21.
  6. ^ "All SPECweb99 Results". SPEC. Nov 21, 2005. Retrieved 2008-12-21.
  7. ^ "Retired SPEC Benchmarks". SPEC. Retrieved 2008-12-21.
  8. ^ "All SPECweb2005 Results". SPEC. Dec 19, 2008. Retrieved 2008-12-21.
  9. ^ Clyman, John (2002-01-15). "Zeus Web Server 4.0". Server's Advantage PC Magazine Editor's Choice Winner. PC Magazine. Retrieved 2008-12-21.

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