EndNote's Term List feature considerably accelerates and simplifies the manual entry of references. Lists of works, authors, publishers, and journals can be prepared in advance and presented to users according to their field of study. By selecting the required items from these ready-made lists, users can enter references manually in a far more practical way. This feature is available in neither Mendeley nor Zotero.
On the other hand, EndNote does not support the .csl format, one of the most widely used citation output style formats. Despite its rich style library, the absence of support for such a common format is a notable shortcoming. The .csl format offers a large pool of citation styles and is supported by both Mendeley and Zotero [1]. Adopting a common citation output style format across programs would make it easier for researchers to exchange style files and would also contribute to a program's wider adoption.
Finally, AI-assisted features such as automatic summarization and similar writing aids could be added to reference managers [2].