CTAN has a new package: xetexfontinfo

[CTAN Announcements]

A new package has been installed at tug.ctan.org and should soon be at
your favorite mirror.

Thank you,
Jim Hefferon
Saint Michael's College

....................................................................

The following information was provided by our fellow contributor:

Name of contribution: xetexfontinfo
Author's name: Will Robertson, on behalf of Jonathan Kew
Location on CTAN: /macros/xetex/plain/xetexfontinfo
Summary description: Query fonts for their supported features
License type: apache2

Announcement text: 
----------------------------------------------------------------------
These documents are used to reveal the various
font features supported by fonts useable in XeTeX.

Use OpenType-info.tex for OpenType fonts and
AAT-info.tex for AAT fonts (Mac OS X only).

Input the font name and compile them with plain 
`xetex`; the output will be a listing of the
supported font features.
----------------------------------------------------------------------

This package is located at 
   http://tug.ctan.org/tex-archive/macros/xetex/plain/xetexfontinfo
.  More information is at
   http://tug.ctan.org/pkg/xetexfontinfo
(if the package is new it may take a day for that information to 
appear).  We are supported by the TeX Users Group http://www.tug.org .  
Please join a users group; see http://www.tug.org/usergroups.html .