MarginNote is a powerful educational and reference application for iOS and macOS. It helps users to organize and manage their references, notes, documents, research materials and bookmarks in a single place. It features a simple and intuitive user interface, which makes it easy for users to organize and access their resources. Additionally, MarginNote provides powerful tools for studying and researching, such as an integrated dictionary, a powerful search engine, a built-in viewer for PDFs, a note editor and many more. With its comprehensive set of features, MarginNote is a must-have app for any student or researcher.
Because it organizes files, you can highlight and annotate them, and they are organized in folders.
Discontinued development and support of Docear was stopped in August 2017. The latest version, 1.2, released in December 2015, can still be downloaded from the official website. http://www.docear.org/2017/02/05/docears-online-services-are-down-recommendation-user-registration-backup/
They are not the same functions. Documents are more for maintaining and organizing research papers, while marginnote is for annotating files and mind-mapping ideas.
Zotero
XMind
FreeMind
Freeplane
Mendeley
Docear
MindManager
LiquidText
Weava
Papers
View Your Mind
NoteLedge
FreeMind is a mind mapper. MarginNote is a PDF / ePub reader.