Pearhub is a platform for PHP that facilitates the publishing of projects, similar to how Ruby's Gemcutter and Python's PyPI function for their respective languages. It supports projects hosted on GitHub or other platforms and emphasizes the use of Semantic Versioning for optimal performance. For additional information, users can refer to the FAQ or an introductory blog post. Chris Wanstrath, known by the handle @defunkt, is credited as the author of this initiative.