Qiqqa is a free research and reference manager. Search for, read and annotate your PDFs. Then review your work, write up and create bibliographies instantly.




Benubird PDF is described as 'Makes personal document management simple: capture, organize and retrieve your PDF documents effortlessly. Managing files is easy with virtual folders and powerful metadata filters. Guaranteed to save you time and revolutionize the way you work with your documents' and is a document manager in the office & productivity category. There are more than 25 alternatives to Benubird PDF for a variety of platforms, including Mac, Windows, iPhone, iPad and Web-based apps. The best Benubird PDF alternative is Qiqqa, which is both free and Open Source. Other great apps like Benubird PDF are Mendeley, Tabbles, Paperpile and ReadCube Papers.
Qiqqa is a free research and reference manager. Search for, read and annotate your PDFs. Then review your work, write up and create bibliographies instantly.




Mendeley helps manage and share academic knowledge: Mendeley Desktop is free academic software (Windows, Mac, Linux) for organizing and sharing research papers and generating bibliographies with 1GB of free online storage to automatically back up and synchronize your library...






Uses a visual, tag-based system to categorize files and folders without moving or duplicating them, enabling ad hoc combination of tags for intuitive search and retrieval, supporting large document collections and visual category management for greater flexibility.




Organize your research papers in a Gmail-like web app, sync your PDFs to Google Drive and cite your references in Google Docs.



Papers helps you collect and curate the research material that you're passionate about. This award-winning reference manager will improve the way you find, organize, read, cite, and share.




Reference management and knowledge organization with integrated task planner. Solution for work groups with data sharing in intranet available.




Automatic works cited and bibliography formatting for MLA, APA and Chicago/Turabian citation styles. Now supports 7th edition of MLA.


PDFKeeper is free, open source document management software that integrates with a compatible, relational database to provide a centralized storage and management solution for PDF documents.

wizdom.ai (formerly colwiz) is a free and comprehensive research management software for researchers, academics and students. With the wizdom.ai android app, you can search, add and manage publications in your wizdom.ai library on the go. Sync instantly across wizdom.




BibDesk is a bibliographic reference manager for Mac OS X. BibDesk is designed to help organize and use bibliographic databases in BibTeX .bib format.



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.



PDF Search is an app to search multiple documents insanely fast. It enables you to find any information in seconds within lots of documents. It uses its AI-powered algorithm to detect the best related pages. Just search your documents, reference books or notes using PDF Search.




Mendely references pdfs; it does not help organize them.