WBibDesk is an open-source reference management software package for macOS, used to manage bibliographies and references when writing essays and articles. It can also be used to organize and maintain a library of documents in PDF format and other formats. It is primarily a BibTeX front-end for use with LaTeX, but also offers external bibliographic database connectivity for importing, a variety of means for exporting, and capability for linking to local documents and automatically filing local documents. It takes advantage of many macOS features such as AppleScript and Spotlight.
WJabRef is an open-sourced, cross-platform citation and reference management software. It uses BibTeX and BibLaTeX as its native formats and is therefore typically used for LaTeX. The name JabRef stands for Java, Alver, Batada, Reference. The original version was released on November 29, 2003.
WPybliographer is a reference management software tool that deals with bibliographic databases, used for viewing, editing, searching, and reformatting bibliographies. Written in Python and licensed under GNU GPL, it provides a scripting framework of classes and functions, which makes it extendable to many other applications. Documentation is available.
Wrefbase is web-based institutional repository and reference management software which is often used for self-archiving. refbase is licensed under the GPL and written in PHP and uses a MySQL backend.
WRefDB is a client/server reference database and bibliography tool for markup languages like SGML, XML, and LaTeX. It is suitable for standalone use for the purpose of self-archiving, but can be used as an institutional repository as well. Data storage proper is done in one of several supported SQL database engines. RefDB runs on Unix-like operating systems and on Windows/Cygwin. RefDB is licensed under the GPL.
WReferencer is a GNOME application to organize documents or references, and ultimately generate a BibTeX bibliography file. It is designed with the scientist/researcher in mind, and "document" may be taken to mean "paper" in general, although Referencer can deal with any kind of document that BibTeX can. Chief among Referencer's capabilities is the automatic acquisition of bibliographic information (metadata) for some kinds of documents. Upon adding a PDF file to a Referencer library file, it will automatically be searched for key identifiers such as a DOI code or arXiv identifier. If either of these is found, Referencer will attempt to retrieve the metadata for the document via the internet. However, metadata fetching for newer additions to arXiv is broken because of the change of format.
WTropy is a free and open-source desktop knowledge organization application that helps users manage and describe photographs of research materials. It was developed by the Center for History and New Media at George Mason University. Photos imported into Tropy can be combined into single items, described with metadata that is applied in bulk or created with custom metadata templates, annotated with research notes, and tagged in accordance with a researcher's preferred mode of organization.
WZotero is a free and open-source reference management software to manage bibliographic data and related research materials. Notable features include web browser integration, online syncing, generation of in-text citations, footnotes, and bibliographies, as well as integration with the word processors Microsoft Word, LibreOffice Writer, and Google Docs. It is produced by the Center for History and New Media at George Mason University.