Information about .pdf File Extension

PDF Document is a cross-platform document created by Adobe Acrobat or a similar program. It is commonly used for e-mail attachments or for saving publications in a standard format for viewing on multiple computers. PDF files may contain text, images, forms, annotations and other data; they preserve fonts and formatting across multiple platforms and appear the same on the screen as they will when printed on paper.

More information about .pdf extension: Wikipedia

Common .pdf file type descriptions:

Adobe Acrobat Document
Foxit Reader PDF Document
PDF Document
PDF-XChange Viewer Document
Nitro PDF Document

Applications, associated with .pdf files

	Adobe Reader by Adobe Systems®, Incorporated Adobe Reader software is the free global standard for reliably viewing, printing, and commenting on PDF documents. It can open and interact with all types of PDF content, including forms and multimedia.
	PDF-XChange Viewer by Tracker Software Products Ltd. PDF-XChange Viewer is a free PDF reader for Microsoft Windows. The basic version of the reader, which can be downloaded free, includes extended/markup capabilities, such as typing, highlighting, callouts, notes, and more. It supports saving of filled PDF forms (AcroForms) and import/export of form data in FDF/XFDF format.
	Foxit Reader by Foxit Software Company The Foxit Reader is a small, fast, and feature rich PDF viewer which allows you to open, view, and print any PDF file.Foxit Reader has a small footprint that starts up instantly, renders PDF files quickly and uses very little memory.
	Adobe Acrobat by Adobe Systems®, Incorporated Adobe Acrobat is a family of application software developed by Adobe Systems to view, create, manipulate, print and manage files in Portable Document Format (PDF).
	SumatraPDF by Krzysztof Kowalczyk Sumatra PDF, also known simply as Sumatra, is a free, open source, lightweight PDF, DjVu, XPS, CBZ and CBR reader for Microsoft Windows with minimalistic design.
	Nitro PDF Reader by Nitro PDF
	Nitro PDF Professional by Nitro PDF Nitro PDF Professional is a commercial software application used for creating and editing portable document format (PDF) files.
	Scientific and technical documentation viewer STDU Viewer is a free viewer for multiple file formats. The goal of this software is to replace the multiple document viewers with a single one simple application. STDU Viewer supports TIFF, PDF, DjVu, XPS, JBIG2, WWF document formats. These are the most popular formats for scientific and technical documentation.
	Foxit Reader Classmate Edition
	Foxit Reader 7.0, Best Reader for Everyday Use! by Foxit Software Inc.
	Foxit Reader Portable (PortableApps.com Launcher) by PortableApps.com Foxit Reader is a free PDF document viewer, with incredible small size, fast launch speed and rich feature set. It is packaged as a portable app, so you can view PDF files on the go.
	PDF-XChange Editor by Tracker Software Products Ltd.
	Firefox by Mozilla Corporation Mozilla Firefox is a free and open source web browser descended from the Mozilla Application Suite and managed by Mozilla Corporation.
	Microsoft Office Word by Microsoft Corporation
	Google Chrome by Google Inc.