Qoppa: Qoppa Software offers an extensive suite of PDF libraries and visual components that cover all PDF processing needs. PDF Functions include creation and modification, assembly, conversion to images and HTML, automated printing, encryption and digital signatures, form fields, viewing and markup, optimization, and a lot more. Qoppa products provide the highest level of performance and reliability and are 100% Java, so they run on all servers and desktop operating systems.
TallComponents: TallComponents offers reliable and proven .NET class libraries to create, modify, convert, read, print and render PDF documents. The libraries are written entirely in C#, have no external dependencies such as Adobe Reader, and are characterized by an intuitive API combined with knowledgeable and fast support.
WebSupergoo: WebSupergoo’s ABCpdf .NET is designed for a combination of maximum power and ease of use, going directly to PDF for blazing speed. ABCpdf supports a wide range of input and output formats, from PDF, HMTL and XPS to SVG, EPS and DOCX. The product is fully color space-aware for importing, construction and rendering, and provides sophisticated operations for the analysis, deconstruction and reconstruction of documents.