In other words, any ASCII editor will do. I, for example, use Notepad, cuteHTML, and occasionally Front Page Express -- all of which are free.
For an 'open source' fellow, why promote mystification? :D
Encrypt scripts are about as good as noRightClick scripts and putting 5000 carriage returns at the beginning of the html page -- in other words, they are not worth the effort and are definitely not to be used for anything that really needs to be secure.