It is important that your web site display its pages quickly for your readers but also for the search engine that gives poor notation to slow web sites.
Here are two CMS that can be considered as a replacement to PluXml.
You want to avoid spelling mistakes in PluXml: enable the spelling corrector SCAYT ! !
Do you want to display pretty photos galleries on your web site managed with PluXml ?
In a website, it's important to have a favicon: it's the little icon that's displayed in the favourites or in the tabs !