This is a free version of the more or less popular IDE for PHP.
I haven't used this product for a long time, since I moved to eclipse / learning emacs, however.
Here came a letter with the following content:
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Title: Now Free and Open Source!
Adapt the open source software community. You get all the features that you can use. Plus, Komodo Edit enters are not fully tested and are complete. It can be made free.