HEATKEYS

The Adobe Acrobat User Community is a global resource for users of Acrobat and PDF, with free eseminars, tips, tutorials, videos and discussion forums.

Sciweavers is a bookmarking network for researchers to share and explore research paper preprints grouped by conference name and year or subject area.

wikiHow is a wiki based collaboration to build the world’s largest, highest quality how to manual. Our multilingual how to manual has free step-by-step instructions on how to do all types of things.

A-PDF Solution is a PDF software developer who focuses on providing affordable Acrobat PDF tools and customization service for personal and small business.

PDFMate Free PDF Converter is a 5-in-1 PDF program to easily convert your PDF to editable Text files, common images, EPUB eBooks, HTML files, and even SWF files.

Bluebeam

The most comprehensive, popular and independent site focused on Adobe Acrobat/PDF. Sponsored by Nitro PDF, ARTS PDF, PDFlib and more.

DevProConnections provides comprehensive, independent how-to content on building applications with the Microsoft stack.

Tracker Software Products develops fast, light PDF software for viewing, converting, and editing PDF documents, with unparalleled support and service.

PDF Editor to replace Adobe Acrobat: Create, Fill, Save, Delete, Submit, Reset PDF Form. Insert Text, Image, URL, Whiteout, Highlight, Drawing, Commenting, Action and Bookmark into PDF. Scan paper form into PDF. International language Support. Cre...

Kvisoft, professional Flash flipping book and Flash photo software provider, dedicates to offering you an easy way to make PDF flipping page book and Flash photo albums.