This fonts are authors' property, and are either shareware, demo versions or public domain. The licence mentioned above the download button is just an indication. Please look at the readme-files in the archives or check the indicated author's website for details, and contact him if in doubt. If no author/licence is indicated that's because we don't have information, that doesn't mean it's free.
Small-grid doodle which creates new combinatorial forms.
I considered this design rather rough and unappealing until I gave it negative spacing. This caused the forms to merge together in unpredictable and interesting ways. The lesson here is that sometimes the metrics, not the aesthetics, are what "save " a design.