Japan's National Diet Library Web Archiving Project regularly collects and preserves websites published in Japan.
Diigo
Diigo combines reading and research tools, including annotation, highlighting, sticky notes, web archiving and bookmarks.
About Diigo
Diigo is a web-based tool for saving, annotating and organizing online research. Users can save bookmarks with tags, highlight text on web pages and PDFs, add sticky notes, and arrange links and notes with an outliner into a personal library. Groups allow sharing research with others. Saving archived copies of web pages with annotations is listed as a premium feature.
Key features
- Save and tag online resources for later access
- Annotate web pages and PDFs while browsing
- Highlight text on web pages for reference or collaboration
- Add sticky notes and comments to web pages
- Organize links and notes using Outliner
- Share research through groups
Best for: Students, classmates, and colleagues who save and annotate web sources together.
Good for
- Combines bookmarks, highlights, notes, and outliner in one place
- Supports annotation on web pages and PDFs
- Includes groups for sharing research with others
Watch out for
- Web page archiving with annotations is listed as a premium feature
Diigo at a glance
- Website
- diigo.com
- Category
- Research & Data › Academic Search
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Last checked
- Oct 5, 2026 · Automated check blocked
- Listed
- Oct 5, 2026
Diigo alternatives
Tools and sites you could use instead, ranked by how closely they match.
UCSB’s California Ethnic and Multicultural Archives preserves primary research materials documenting diverse communities in California.
The Earth Simulator Research Results Repository lets visitors browse and search research produced with the Earth Simulator.
Research Square provides a preprint platform where researchers can submit and browse early research, with featured preprints and research videos.
ORFEE is the institutional repository of the Haute école de la province de Liège, with research and scholarly works.
The Great 78 Project preserves and shares 78 rpm records for research and discovery.
Popular in Academic Search
Well-known listings from the same topic.
AIT Associated Repository of Academic Resourcesrepository.aitech.ac.jp/dspace/index.jsp?local…Project Ben-Yehudabenyehuda.orgAI Calabriaai.calabria.itIndigenous Systemsindigenoussystems.orgnumelyonumelyo.bm-lyon.frBangla Wikisourcebn.wikisource.org
Diigo FAQ
Can I annotate PDFs with Diigo?
Yes, the site states you can annotate web pages and PDFs directly as you browse online.
Can I keep a copy of a page if the original goes offline?
Archived web pages with annotations intact are listed as a premium feature.
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Tell us and an editor will check it.
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