Instantly add PDF Viewing to your ActiveX-based Windows apps. Get faster to market with our visual programming components.

GroupDocs.Annotation for .NET is a comprehensive set of APIs that helps you build document annotation management applications in C#, ASP.NET and other related .NET technologies. You can create and work with all popular annotation types, such as area, point, text, ellipse, link, underline, polyline, arrow, distance, watermark, image etc for PDF, HTML, Microsoft Office Word, Excel spreadsheets, PowerPoint presentations, Visio, images, CAD drawing and various other formats. The document annotator library allows you to export documents after adding annotations, comments or highlighted notes back to its original format. It also gives you a handy set of data objects through which you can customize annotations as per your requirements.

Bring accurate, reliable and fast PDF functionality to any application or workflow. Matured for 20 years in the world's most demanding environments, PDFTron’s fully supported PDF SDK is built from the ground up and is not dependent on external third-party open-source software. Have confidence that all documents will output quickly and flawlessly, even at 1GB+ or 10,000+ pages. Display PDFs quickly by streaming individual pages or tiles without a full file download.

SciChart for WPF v4 contains 25 WPF Chart types with record performance, unlimited multiple X/Y axis, interactive zooming and panning and rich annotations API. With so many options to choose from, plus our legendary WPF Charting performance and helpful tech support, it’s not hard to see why we’re number #1!

Manage interactive and explanatory annotations to specific words, phrases and regions of the documents content in any cross platform application. GroupDocs.Annotation for .NET API allows developers to seamlessly enhance their applications with the capability to annotate text or images in a document. Annotation can be applied in form of comments, explanations with highlighted notes, watermark, polyline and much more. Annotator API supports PDF, Microsoft Word DOCX, Excel XLSX and PowerPoint PPTX documents.

ImageGear for .NET adds enterprise-class image viewing, processing and editing functions easily to any application, with support for more than 100 file formats and expanded functionality such as optical character recognition (OCR), barcode recognition and support for medical DICOM images.

For Windows Developers who need to PDF TIFF Viewer and Image Viewer , plus support TIFF with WANG Annotations, securing a PDF document, add annotation with PDF for C++ , C#, VB.NET , VB, Delphi, Vfp, MS Access.

WYSIWYG, multi-lingual and multi-format. Write text once then compile CHM help files, manuals in PDF format, Web Help, Printed Manuals, Qt framework QtHelp, OracleHelp, JavaHelp, HelpGUI, documentation in EPUB and MOBI, and publish online documentation to Wordpress CMS. Built-in templates, screenshot capture and annotation, tutorial maker, glossary manager, to-do organizer, named styles, conditional compilation and more.