On Joshua Eichorn's blog, there's information about a new PEAR package that would provide built-in AJAX support - HTML_AJAX.

If your on the pear-dev mailing list you should have already seen the post but I'll blog about it here as well hoping to get some feedback.

A proposal was made on pepr for an HTMLAJAX library in PEAR. I was less then happy with the implementation and since once a package is in PEAR its hard to replace I thought i’d step up and provide a package that I think is ready for widespread use. [...] So here is an alpha release of my HTMLAJAX library.

Anyhow im actively looking for someone to come aboard as a co-maintainer of this package, if your interested let me know.

The goal of this package is to provide Sync and Async AJAX calls, with an optional JS library offering things like a content replacement api. It should be usable in a server style setup (JPSpan) or directly in a page (Sajax).

It looks like the package is off to a good start, but could be made even better with the help from a group of telented developers. If you'd like to help out, get the full scoop here.