We have just uploaded the Alpha 3 release of the JTML plugin for Joomla 1.5. It's available for free download at plg_jtml_1.0.alpha3.zip

This version is much more robust than previous releases. It features a new reference parser and the release is backed by a set of unit tests to ensure quality. It's still alpha grade code though, so use at your own risk and PLEASE report bugs.

For a description of JTML, please read the white paper.