Docupilot - Document Generation, Document Automation software
Tcpdf - TCPDF: Open Source PHP Class for generating PDF documents
JasperReports - JasperReports Server is a stand-alone and embeddable reporting server.
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request
WebMerge - WebMerge is an online platform that allows you to easily collect data, populate a document and send it to any contact automatically.
HTML PDF API - Easily generate PDF documents from HTML code with our powerful API