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  2. List of academic databases and search engines - Wikipedia

    en.wikipedia.org/wiki/List_of_academic_databases...

    The terms "free", "subscription", and "free & subscription" will refer to the availability of the website as well as the journal articles used. Furthermore, some programs are only partly free (for example, accessing abstracts or a small number of items), whereas complete access is prohibited (login or institutional subscription required).

  3. Wikipedia:Tiers of reliability - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Tiers_of_reliability

    Topic-specific essays. Identifying reliable sources (history) Identifying reliable sources (law) Identifying reliable sources (science) Identifying reliable sources (medicine) Identifying and using style guides (WP:STYLEGUIDES) Using maps and similar sources in Wikipedia articles ; Other. Reliable sources/Noticeboard ; Reliable sources ...

  4. List of PDF software - Wikipedia

    en.wikipedia.org/wiki/List_of_PDF_software

    Google Chrome: Includes a PDF viewer. GSview: Open source software and Ghostscript's viewer for Windows. Microsoft Edge: Includes a PDF viewer. Microsoft Reader: A discontinued PDF viewer in Windows 8.1. Mozilla Firefox: Includes a PDF viewer. MuPDF: Free lightweight document viewer. Nitro PDF Reader: Freeware (though proprietary) PDF reader ...

  5. Help:Find sources - Wikipedia

    en.wikipedia.org/wiki/Help:Find_sources

    However, it is possible to use the open web to find many good sources to use in writing encyclopedia articles. Examples of such sources are news stories from newspapers with a reputation for accuracy, books which have previews on digital libraries, and academic papers which are available open access in open archives.

  6. List of open-access journals - Wikipedia

    en.wikipedia.org/wiki/List_of_open-access_journals

    This is a list of open-access journals by field. The list contains notable journals which have a policy of full open access. It does not include delayed open access journals, hybrid open access journals, or related collections or indexing services.

  7. Google Scholar - Wikipedia

    en.wikipedia.org/wiki/Google_Scholar

    Google Scholar is a freely accessible web search engine that indexes the full text or metadata of scholarly literature across an array of publishing formats and disciplines. . Released in beta in November 2004, the Google Scholar index includes peer-reviewed online academic journals and books, conference papers, theses and dissertations, preprints, abstracts, technical reports, and other ...

  8. Category:Free PDF software - Wikipedia

    en.wikipedia.org/wiki/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 license, and whose source code ...

  9. List of free and open-source software packages - Wikipedia

    en.wikipedia.org/wiki/List_of_free_and_open...

    This is a list of free and open-source software packages, computer software licensed under free software licenses and open-source licenses.Software that fits the Free Software Definition may be more appropriately called free software; the GNU project in particular objects to their works being referred to as open-source. [1]