PDFreactor is a formatting processor to convert HTML and XML to PDF. It uses Cascading Style Sheets (CSS) to define page layout and styles. It allows you to dynamically generate PDF documents such as invoices, delivery notes, shipping documents, or print versions of Web content on-the-fly. Vector graphics (SVG), barcodes, MathML, XSLT, and CMYK colors are supported. All common J2EE application servers are supported. Complete .NET, PHP, Perl, Python, and Ruby APIs are included. Direct integration into automatic build processes using Apache Ant is also possible.
LibAxl is an efficient implementation of the XML 1.0 standard specification. It doesn't have any external library dependencies, having a clean implementation based on opaque types and a consistent API to manipulate your XML documents without compromising your code. It is extremely memory efficient and thread safe with a small footprint (111k). It also includes XML Namespaces support.