Researcher PRO is described as 'ResearcherPRO has been designed to help researchers and anyone who is interested in reading papers, in facilitating many operations such as discover them, organize them, sync them and note taking on them' and is an app in the Education & Reference category. There are more than 10 alternatives to Researcher PRO for a variety of platforms, including Online / Web-based, Mac, Windows, Linux and iPhone. The best alternative is Zotero, which is both free and Open Source. Other great apps like Researcher PRO are Qiqqa (Free, Open Source), Mendeley (Freemium), BibSonomy (Free, Open Source) and ReadCube Papers (Paid).
Zotero is a free, easy-to-use Firefox/Chrome extension or standalone program to help you collect, organize, manage, search and cite your research sources directly in your favourite word processor, with 300 MB free online storage.
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...
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.
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.