Their software also don’t need to run on Java or .NET, like so many open source office suites, so it makes their software very small and efficient.
You may try these links: http://www.ssuitesoft.com/index.htm
or
http://www.ssuitesoft.com/ssuiteexcalibur.htm
or
http://ssuite5element.webs.com/thefifthelement.htm