Diigo
A bookmarking and web annotation tool for research, with highlights and sticky notes.
- Verified facts
- 4 of 4
- Alternatives ranked
- 4
- Approved reviews
- 0
- Visits sent from here
- 0
About Diigo
Diigo, around since 2005, combines social bookmarking with annotation. You save and tag pages into a personal library, then highlight text and add sticky notes directly on web pages and PDFs, so the context of why you saved something stays attached to it. An outliner helps turn collected links and notes into a structured research outline, and groups let classmates or colleagues share a library. It is particularly popular in education, with special educator accounts. A free plan covers basic bookmarking and highlighting, while paid tiers add features such as cached copies of pages, full-text search and unlimited highlights. It works through browser extensions and the web, with an Android app. The interface feels dated compared with newer tools and some features are tied to the extension, but for students and researchers who annotate as they read it remains a practical choice.
Best for: Students, teachers and researchers who annotate pages as they collect them.
Pros and cons
What works
- Highlights and sticky notes on web pages and PDFs
- Outliner turns research into structured notes
- Groups for shared class or team libraries
- Long-running service since 2005
Why people leave
- Dated interface
- Cached pages and full-text search need a paid plan
- Limited mobile experience
Top Diigo alternatives
See all 4- 1
Raindrop.io66.5Cleaner, modern bookmark manager with highlights and sharing on a free plan.
- 2
Readwise Reader62.6Highlight the web and PDFs, then export notes to Notion or Obsidian.
- 3
Linkwarden59.6Open-source collections with annotations and permanent page copies.
- 4
Pinboard46.7Simpler, faster bookmarking if you don't need annotations.
Why people left Diigo
In reviewers' own words, from reviews of the apps they moved to. These are their opinions, not ours.
No switching stories yet. If you moved away from Diigo, review the app you switched to and tell us why.
Reviews
No approved reviews yet. How we verify reviewers
Write a review of Diigo
Diigo: common questions
Is Diigo free?
Diigo has a free plan and paid plans.
Is Diigo open source?
No, Diigo is not open source. Open-source alternatives include Linkwarden.
What platforms does Diigo run on?
Diigo is available for Web, Android and Browser extension.
What are the best alternatives to Diigo?
The highest-ranked Diigo alternatives right now are Raindrop.io, Readwise Reader and Linkwarden. See the full ranked list for pricing, platforms and verified facts.