Tcpdf - TCPDF: Open Source PHP Class for generating PDF documents
HTTrack - HTTrack is a free (GPL, libre/free software) and easy-to-use offline browser utility.
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request
GNU Wget - GNU Wget is a free software package for retrieving files using HTTP(S) and FTP, the most...
HTML PDF API - Easily generate PDF documents from HTML code with our powerful API
SiteSucker - SiteSucker is a Macintosh application that automatically downloads Web sites from the Internet.