Presently, most of my products are shareware of the “honor system” variety. I trust you to pay for them if you find them valuable. Many of them are sold through http://order.kagi.com/?4RW.
The licensing terms are that:
It’s not my fault if your computer explodes or the world ends because of a bug in any of my software - but I would feel bad.
You may not copy and distribute this in any way without giving credit where credit is due.
If you think more terms are necessary, please let me know.