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.
jsPDF : A HTML5 client-side solution for generating PDFs. Perfect for event tickets, reports, certificates, you name it!
HTML Purifier : HTML Purifier is a standards-compliant HTML filter library written in PHP. HTML Purifier will not only remove all malicious code (better known as XSS)...
DaDaBIK : DataBase Interfaces Kreator - Create a PHP Web front-end for a MySQL PostgreSQL Oracle MS SQL Server database in a minute
TCPDF is a FLOSS PHP class for generating PDF documents.