PDFKit.NET is a 100% managed (verifiable) .NET class library for creating and manipulating PDF documents. It consists of just a single assembly that can be xcopy-deployed. It has no dependencies other than the .NET framework. Central to PDFKit.NET is a consistent and highly intuitive object model consisting of classes like Document, PageCollection, Page, Canvas, Shape, Bookmark, Annotation, Field, etc. The focus of the development team is always to ease the task of integrating our class libray in a larger application. These are PDFKit.NET’s primary features:

Fill and flatten PDF forms
Split and assemble PDF documents
Apply security settings such as passwords
Stamp content on new and existing pages
Support for CMYK and Grayscale colorspace
Read, Create and Modify Actions, Sticky Notes and Links
Active jаvascript interpretation (for formatted and calculated fields)
Adobe LiveCycle Designer compatibility (static forms only)
Extract and search text
Digitally signing and verification
Native .NET 2.0 support, including 64-bit support

PDFRasterizer.NET is a 100% .NET (verifiable) solution for printing PDF documents unattended and converting PDF documents to a raster image, WPF graphics or an XPS document.

‎.NET Document Viewer API to Render 90+ document formats into PDF, HTML and Image with Powerful ‎Configuration Options.‎ GroupDocs.Viewer for .NET APIs help you create powerful applications in C#, ASP.NET ‎and other .NET-based technologies, which can render and display documents and images of 90+ file ‎formats without installing any external software. The file viewer library rasterizes the documents and then converts them into SVG+HTML+CSS to optimize the overall document rendering experience for viewing business documents, images, ‎text files, diagrams, graphics, email attachments and PDF files with speed, true-text and high-fidelity inside your applications. You have the option to add document viewing and reading functionalities in your applications to display ‎whole document, partial document, specific page/cell range, individual document layer, with or ‎without annotations and comments for the supported file formats.‎

ABCpdf .NET - PDF component for the creation and manipulation of Adobe PDF documents.

Free 30-day trial of full product, with free tech support!
Designed for web server and standalone applications
Comprehensive documentation, freely adaptable projects and example code
Use with ASP, ASP.NET, C#, VB.NET, and more

DIHtmlParser is a component suite to parse, analyze, extract information from, and generate HTML, XHTML, and XML documents for Delphi (Embarcadero, CodeGear, Borland).

Multilizer Localization Tools are the easiest way to create and manage multilingual versions of software, documents, webpages and other content. With highly usable editor features, dictionaries and validations, the focus can be on the essential: translation.

ProgressВ® Kendo UIВ® delivers everything you need to build a modern web application under tight deadlines. Choose from more than 70 UI components and easily combine them to create beautiful and responsive apps, while speeding development time by up to 50 percent.

XmlPrime brings complete, versatile, fast, easy to use and standards-compliant implementations of XSLT 2.0, XQuery 1.0, XQuery 3.1, XPath 2.0 and XPath 3.1 as well as several other W3C standards to the Microsoft .NET Framework. It also includes partial support for XSLT 3.0.

Aspose.HTML is a cross-platform class library that enables you to perform a wide range of HTML manipulation tasks directly within your .NET applications. Aspose.HTML supports parsing of HTML5, CSS3, SVG and HTML Canvas to construct a Document Object Model (DOM) based on the official W3C specification. Create, Read and Edit HTML documents including CSS styles as well as Render to PDF & Raster Image formats.