Antenna House, Inc has released XSL Template Designer 1.0, a $3000 payware (no, I didn't leave out a decimal point) forms-based GUI designer for XSL-FO that runs on Windows. It supports fixed layout for rigid forms, flow layout for forms that have expanding fields to accommodate the data, and label layouts. The Antenna House XSL Formatter V3.1 or later is a prerequisite.