Reference managers such as: Endnote, Refworks, Zotero, & Mendeley allow you to download, collect, & share references, PDFs, data, and documents. Some work with word processing to format citations and footnotes in papers and create bibliographies in a variety of styles. This list contains commonly used tools and apps in the sciences.
Citation management software helps you to collect and organize papers, cite sources, and create bibliographies in a variety of citation styles.
Popular citation management tools in the sciences and engineering include:
Explore other available tools and apps for reference management.
Software for Science Reference Management: a web-list of many bibliographic management programs for the PC or Mac, some are free.
Reference Management Apps at alternativeTo.
Not sure which ones will work best for you? Wikipedia offers an extensive Comparison of Reference Management Software.