I am working on a system called "FreeLock" that will use the same basic methodology as CodeLock, but obviously be free.
For those of you not familiar with CodeLock, it encodes your PHP file, then includes codelock.php (also encoded) which then decodes and runs your script (with the option of using gzip style compression on it)
I am just wondering if anybody here is interested in something like that... let me know. The encoding/decoding works fine (with some varying scrambling methods of the end-result base64 code).
I plan on having it ready within a month or so.
Let me know if you are interested, and what features you want from it.