The TrueTypeViewer, TTIComp, OTComp and OTLegacy all use my easy-to-handle, fast and safe OpenType font manipulation library. You may download the sources to all of those at once. The current version is 20030318. Building the tools requires the following:

All of the programs are distributed under the GNU General Public License, which allows you do to pretty much with it (like selling them, if you can find anyone who is crazy enough to pay for them, or changing the source and redistributing them). However, I would like to incorporate any improvements in the versions you find here. So if you find any bugs, or have suggestions for improvements, don't hesitate to email me. If you've got a bug you cannot find a solution for, please email me instructions on how to reproduce the bug and I'll try to do what I can. Thank you.