Bookends is a commercial reference management software package for Mac OS X that is used to manage bibliographies and references when writing essays and articles. Its target market is students, academics and professionals.




PDF Stacks is described as 'With PDF Stacks, you can organize, find and browse, search, annonate and share your collection and library of PDF files, papers, research and journal articles with a single click. It saves you time: no more wondering around your computer to find a PDF file' and is a document manager in the office & productivity category. There are more than 25 alternatives to PDF Stacks for a variety of platforms, including Windows, Mac, Web-based, iPhone and Linux apps. The best PDF Stacks alternative is Zotero, which is both free and Open Source. Other great apps like PDF Stacks are Mendeley, Qiqqa, JabRef and BibSonomy.
Bookends is a commercial reference management software package for Mac OS X that is used to manage bibliographies and references when writing essays and articles. Its target market is students, academics and professionals.




UbikReader is the new way to organize your documents. Multitask while you read, annotate, write notes and share your documents with ease. No more worrying about how to manage your large, cluttered library of documents.



I, Librarian is an online service that will organize your collection of PDF and office files. The service focuses on central management of PDF documents suitable for real-time collaboration in research teams and companies.


I, Librarian is the most popular Self-Hosted alternative to PDF Stacks.
Search a comprehensive, centralized cache of all text found in your documents and other text-based files, including database and package files.




Program for organizing and commenting textual citations from texts (books, articles, or other published works) for use in producing scientific or academic publications.

Tabula DX - PDF Database Search Tool for ASP.Net. Designed specifically for search-enabling large collections of PDF files and providing PDF text search , Tabula DX offers complete PDF Searchability Searching PDF files, bookmarks, annotations, and metadata including XMP.

Bibus is a bibliographic database. It uses a MySQL or SQLite database to store references. It can directly insert references in OpenOffice.org and MS Word and generate the bibliographic index.


Elumity is a powerful academic tool for managing and sharing knowledge, combining research, reference management, and collaboration in one platform.


