PDF-XChange Editor is a PDF reading and editing tool, once known as the smallest (now also becomes a bloated application), fastest and most feature-rich PDF document reader + editor. It focuses on the editing functions of PDF type of electronic documents, and supports many PDF file related editing functionalities such as creating, viewing, editing, annotation, OCR recognition and digital signature.

For any PDF solutions that want to grab the market share from Adobe Acrobat, it has to start from the availability and usability. In this case, the performance of Bluebeam Revu makes users' eyes bright at the moment.