XM, short for XSLT Make, is a lightweight content management and publishing solution based on XML and XSLT. The XM plug-in lets you run XM from within the Eclipse platform. It allows you to edit XML documents and run them from the same environment.
The product is distributed as open-source under the Artistic License.
You can download the latest version of XM and find more information on this project at ananas.org/xm.