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A-PDF
Offers alternative solutions for viewing and modifying files in Portable Document Format.
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Appligent Document Solutions
Offers PDF server software, enterprise-class PDF desktop software, and PDF professional services.
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Enfocus
Specializes in software solutions for enhancing PDF productivity and workflow automation. Helps promote efficiency and minimizes prepress errors.
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GuaPDF
Utility for removing PDF passwords and restrictions in Win32, Linux, and Mac computers.
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Llionsoft
Collection of Delphi libs and PDF tools including an RTF to PDF converter and PDF protection manager.
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PDF Split and Merge
Free software tool for splitting and merging PDF documents. Site includes related resources and discussion forum.
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PDFTK
Simple solution for performing a variety of tasks involved in the handling of PDF files. Includes merging, splitting, modification, metadata updating, and orientation altering functions.
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PDFTron
Provides PDF components and tools including developer resources and support.
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ProposalPad
PDF proposal software designed specifically for small business owners.