HTML2PDF : HTML2PDF is a HTML to PDF converter written in PHP.
It allows the conversion of valid HTML 4.01 in PDF format, and is distributed under OSL.
Text_Highlighter : Provides functionality to perform syntax highlighting for different file formats.
ApiGen : ApiGen is the tool for creating professional API documentation from PHP source code, similar to discontinued phpDocumentor/phpDoc.
Alpaca : Given a web API, Generate client libraries in node, php, python, ruby
TCPDF is a FLOSS PHP class for generating PDF documents.
