介紹PDF-XChange Editor是可以取代Adobe Reader的PDF檔檢視、編輯、修改工具，它比其他的PDF閱讀編輯軟體要來得更小、更快、功能更多。
Turn your PDFs into documents you can edit. Solid Converter PDF to Word converts PDF files into Microsoft Word® documents (and Word files into PDFs). Solid Converter lets you recover the text, layout, and images of your original document at a fraction of the cost of Adobe® Acrobat® .
Infix is the only PDF editor that intelligently re-creates the original content so that you can edit it in the way you would expect. It uses a set of intelligent algorithms to recreate the original structure of the document. This means you can edit a PDF just like you would a Word document.
The GoDiagram library, Northwoods.Go, is a set of controls and classes built on the .NET platform. GoDiagram makes it easy to deliver editors that allow users to see and manipulate diagrams of two-dimensional graphical objects arranged in a scrollable window.