Tcpdf - TCPDF: Open Source PHP Class for generating PDF documents
PDFCreator - PDFCreator converts every printable document to PDF and many other formats. Create professional PDFs with a few clicks and it's free. With many Professional Features: merge documents, send emails and more.
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request
Vector Conversion Tool - Easily convert your Vector files to other formats and back
HTML PDF API - Easily generate PDF documents from HTML code with our powerful API
Foxit PhantomPDF - Edit PDF files with our feature-rich PDF Editor. Download Foxit PDF Editor to convert, sign, scan / OCR & more. A speedy PDF Editor alternative to Adobe Acrobat.