I am using Mendeley for paper and citation manager. Mendeley have 2 thing I need:
- index, searchable in all paper (title, author, content, ...)
- auto-lookup all information (title, author, conf, ...). If Mendeley get incorrectly, I can manually input the DOI number, then it correct itself.
- sync (including highlighter and note). Basicly, it work like you note, highlight the pdf and save on Dropbox.
However, my free space is going to fill up. Mendeley paid option is too much for me. I would rather pay for dropbox, but dropbox alone does not index, look up all useful info from my paper.
I am looking for alternative. It does not have to be one software do all thing, but combination of some software is good for me.
For example: I would like a software that index, info-lookup all paper (pdf file) in my local folder. Then I sync the folder with Dropbox (for cheaper storage price).