Qiqqa is a free, award-winning research management system.
If you're serious about getting the most from your PDFs, Qiqqa is for you.
Superb reference and document management. Import PDFs into separate libraries. Automatic OCR and tag extraction. Qiqqa helps you populate missing metadata. Full-text search, duplicate paper detection, inbound and outbound links, and much more.
See information about papers, and connections between concepts, in a totally new way. Explore an entire library of papers via authors, papers, tags, and themes. Know exactly what paper to focus on next. More Info »
Top-notch built-in PDF reader with annotating, highlighting, automated jump links, and so much more. Create printable summaries of notes, mindmaps of your thoughts, and directly cite your references within Microsoft Word™.
Optionally sync to the private cloud with unlimited storage. Share library documents, metadata, and notes in private with selected friends or colleagues.
Trusted by students and researchers around the world. More Info »