... Elxis version 2009.3 codename Aphrodite is out, download it from Elxis Download Center (EDC) ...
From Elxis Official Documentation
Elxis can be used in a wide range of platforms and operating systems. This document lists the minimum server requirements needed in order for Elxis to function properly. If you have a question or this document does not cover all the issues regarding Elxis system requirements, contact Elxis Team.
Elxis can run on Linux/Unix or Windows. Elxis can also run on Macintosh although we have not tested it thoroughly. We recommend Linux as the server operating system. Any Linux distribution is fine (Red Hat, Suse, Ubuntu, Slack, Fedora, etc). On Elxis 2009.0 added locale support for Debian, BSD and Ubuntu.
Elxis can run on any PHP enabled web server. We recommend the usage of the Apache web server (version 1.3 or 2.0). Elxis is also well tested and usable on Microsoft IIS. An excellent alternative to Apache is Lighttpd web server. Mod Rewrite is required by Apache if you wish to enable SEO PRO. For IIS you should use the Ionic Isapi Rewrite filter and for Lighttpd you can have SEO PRO URLs with the help of the Lua scripting language. See also our alternative web servers list. Here is a list of alternative to Apache http servers on elxis.org.
We recommend PHP 5.2 or higher. Elxis 2008.0 is compatible with PHP 4.4 or higher but all newer versions (2008.1, 2009.0) as well as most third party extensions, require PHP 5.0 or higher. Elxis is a huge CMS with many features that needs some extra PHP memory than a normal PHP script. The minimum PHP memory for an Elxis default installation is 8MB although we recommend 16MB or higher depending on the site size and the number of the enabled extensions. Modern servers have plenty of memory, edit your server's PHP.ini and allocate some more memory to PHP if you wish to be sure (you can raise it up to 256MB for example).
Elxis CMS uses the ADOdb database Abstraction library to handle database. ADOdb supports many digfferent types and versions of databases. Currently elxis support Mysql 4.1 or higher, MySQL 5.0 or higher, PostgreSQL 7.3 or higher and Oracle using the oci8 database driver. Oracle support added on Elxis 2008.1 and is experimental.