FingerPDF is described as 'Do you need efficient access to your technical documentation ? Do you want to increase your knowledge building a personal digital library of e-Books, Magazines, Articles and Web pages?' and is an app. There are more than 25 alternatives to FingerPDF for a variety of platforms, including Windows, Mac, Online / Web-based, iPhone and iPad. The best alternative is Zotero, which is both free and Open Source. Other great apps like FingerPDF are Qiqqa, Mendeley, DEVONthink and BibSonomy.
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...
Tag files, along with your peers to organize and find them. Works on local or network drives and in the Cloud. Tabbles features collaborative tagging, auto-tagging rules, an Outlook Plugin, a Chrome extension and is well integrated with Windows,.
A handy, intuitive reference-managing tool. Citavi researches in over 4800 databases and catalogs, organizes and structures your literature, references, quotes and idea collections and assists you with your documentation or publication.