PDFCrowd - Pdfcrowd is a Web/HTML to PDF online service. Convert HTML to PDF online in the browser or in your PHP, Python, Ruby, .NET, Java apps via the REST API.

GoldenSoftware Surfer - GoldenSoftware Surfer is full-function weather forecasting software that offers 2D or 3D mapping, modeling, and analysis mostly used by scientists or engineers.

DocRaptor - As the only API powered by the Prince HTML-to-PDF engine, DocRaptor provides the best support for complex PDFs with powerful support for headers, page breaks, page numbers, flexbox, watermarks, accessible PDFs, and much more

TatukGIS Editor - GIS mapping and data editing application with built-in scripting environment and Free viewer

PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request

QGIS - QGIS is a desktop geographic information system, or GIS.