Bibliopedia is an open source, semantic wiki research platform designed to crawl scholarly resources including JSTOR, the Library of Congress, the Arts and Humanities Citation Index, and similar data sources, extract metadata about works cited, convert that data into a semantic web format, aggregate the different repositories, then display the results on a wiki-style website for the scholarly community to verify, add to, annotate, elaborate, and discuss.
BibMe is an automatic bibliography maker that auto-fills information, allowing you to build easily a works cited page. You can download your bibliography in either MLA, APA, Chicago, or Turbian formats.
Bibus is a bibliographic management software. You may search, edit, and sort bibliographic records. You can also perform live queries, and insert references and formatting into various Word Processors.
Bookends is reference management software that allows you to collect, annotate, and cite publications. Bookends performs Internet searches to retrieve references and associated web pages, or find and import references from other locations.
Citeline is a web-based service that assists with the publishing of bibliographies and citation collections. You can create interactive exhibits and share your data online. Additionally, you can also import Zotero and BibTex files. Citeline is part of MIT's Simile project.
CiteULike is a free service to help you to store, organise and share the scholarly papers you are reading. When you see a paper on the web that interests you, you can click one button and have it added to your personal library. CiteULike automatically extracts the citation details, so there's no need to type them in yourself. It all works from within your web browser so you can access it from any computer with an Internet connection. CiteULike supports annotation and rating of items, and upload of attachments (e.g. PDF file). (Attachments are only accessible privately by individual users).
Android and iOS app that uses your phone or iPad's built-in camera to scan documents. Includes image optimization, OCR, option to save as PDF, JPEG, or text file, and ability to send documents to other accounts (e.g. Dropbox, Evernote, Google Drive, etc.)
Designed for journalists, a web-based service for working with primary sources that features search and analysis, highlighting and annotation, and document sharing. Uses Tesseract for OCR and allows users to upload documents and search other its document collection.
EndNote is a reference management software tool used to organise references, images and PDFs in any language. References may be added manually or by importing from EndNote to instantly create bibliographies and figure lists.
Mendeley is a reference management tool that allows you to generate bibliographies, find and import papers of interest, access your papers from anywhere online, and collaborate with other researchers online. Mendeley has developed an iPhone app as well, that allows you to read your papers on your phone.
MLA, APA, Chicago / Turabian and most-common Bluebook forms as an integrated citing and note-taking platform for individual or group projects. Prompts for analysis of source types and is unique in offering teaching support and personal help on any citation. Instructor / librarian view allows teacher to comment on work-in-progress providing just-in-time feedback in-context. Archives copies of web pages and pdfs which can be annotated. Dashboard provides long-term access to a portfolio of work.
"Protégé is a free, open source ontology editor and knowledge-base framework
The Protégé platform supports two main ways of modeling ontologies via the Protégé-Frames and Protégé-OWL editors. Protégé ontologies can be exported into a variety of formats including RDF(S), OWL, and XML Schema." -- Protege Home Page (viewed 30 October 2012)