Just based on their READMEs it looks like: - Comic Mono was built by a Python script by a non-designer as open source-ish - Comic Code was built by a font des

Just based on their READMEs it looks like: - Comic Mono was built by a Python script by a non-designer as open source-ish - Comic Code was built by a font designer with commercial intent - Comic Code includes more font variants (italics, ligatures)