The service marked are for NAIST members only

EndNote basic
EndNote basic delivers tools to search online resources, save Web of Knowledge records directly to an online library, collect and organize references, and format citations and footnotes or a bibliography.
EndNote Click (Formerly Kopernio)
EndNote Click (formerly Kopernio) is presented by Clarivate Analytics　(provider of Web of science).
EndNote Click is a free, easy-to-use browser plugin that helps you save time accessing full-text journal articles by bringing your institutional subscriptions as well as open access content into your workflow at your point of need.
This extension is integrated with over 20,000 academic websites including Web of Science and PubMed. EndNote Click make easy to export articles to your preferred reference manager (EndNote, Zotero or Mendeley)
Now available on Chrome, Firefox, Edge . For Opera,　you'll need to add an extension called Chrome extensions for Opera first, then get EndNote Click for Chrome.
NAIST member can use EndNote Click for free.
* 2GB of Locker storage
* Integration with Dropbox to automatically sync PDFs from Kopernio to your Dropbox folder
* .bib file export to help with your bibliographies
* Unlimited tags to help keep your locker tidy, even when you have lots of PDFs
If you want to get EndNote Click Premium, please click HERE (NAIST members only).
EndNote Click general ver. https://kopernio.com/

Mendeley

A free desktop application (Mendeley Desktop) and web application (Mendeley Web) for managing and sharing research papers. (for a fee over 500MB) English Interface.
Automatic extraction of metadata from PDF papers, direct import of bibliographic data from various databases, full-text search across papers.Social networking features.
iPhone&iPad app is available.