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2. QR code - Wikipedia

   en.wikipedia.org/wiki/QR_code

   The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; the pattern of position detection was found and determined by applying the least-used ratio (1:1:3:1:1) in black ...

3. VueScan - Wikipedia

   en.wikipedia.org/wiki/VueScan

   Website. hamrick.com. VueScan is a computer program for image scanning, especially of photographs, including negatives. [4] It supports optical character recognition (OCR) of text documents. [5] [6] The software can be downloaded and used free of charge, but adds a watermark on scans until a license is purchased.

4. List of virtual printer software - Wikipedia

   en.wikipedia.org/wiki/List_of_virtual_printer...

   CC PDF Converter (discontinued) – A Ghostscript-based virtual printer. cups-pdf – An open source Ghostscript-based virtual printer that can be shared with Windows users over the LAN. CUPS. Ghostscript – A command-line library for creation of PostScript and PDF files. RedMon – Redirects a special printer port to the standard input of ...

5. PDFedit - Wikipedia

   en.wikipedia.org/wiki/PDFedit

   PDFedit. PDFedit is a free PDF editor for Unix-like operating systems (including Cygwin on top of Windows ). It does not support editing protected or encrypted PDF files or word processor -style text manipulation, however. [1] PDFedit GUI is based on the Qt 3 toolkit and scripting engine ( QSA ), so every operation is scriptable.

6. List of PDF software - Wikipedia

   en.wikipedia.org/wiki/List_of_PDF_software

   LibreOffice. Free ( Mozilla Public License) an Office suite; allows to export (and import, with accuracy limitations) PDF files. Microsoft Word 2013. Proprietary. Desktop software. The 2013 edition of Office allows PDF files to be converted into a format that can be edited. Nitro PDF Reader. Freeware.

7. Category:Free PDF software - Wikipedia

   en.wikipedia.org/wiki/Category:Free_PDF_software

   Category. : Free PDF software. This is a category of articles relating to free software for making or viewing Portable Document Format (PDF) documents. That is, software which can be freely used, copied, studied, modified, and redistributed by everyone that obtains a copy. Typically, this means software which is distributed with a free software ...