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 across desktop, web and mobile. Mendeley Web is a free research network which lets you manage research papers online, discover trends and connect to like-minded academics.
- Citavi 5 has far more functionalities than Mendeley. Mendeley can not search among annotation, it can not distinguish between different kind of notes (direct, indirect quotations, comments, main ideas, etc.) and more other functions.