# Alternatives to Diigo

Research annotation veteran.

Diigo ranks #2 of 11 in Bookmark managers, with an Alt Score of 82. It is proprietary, freemium and available on Web, Browser extension, iOS and Android. 9 of 10 checklist rows are verified against a public source.

Source: https://altcatalog.com/alternatives/diigo/
Category: Bookmark managers

## Where Diigo stands out

- **Full-text search of pages** — 3 of 11 apps with a verified answer have this
- **Highlights** — 4 of 10 apps with a verified answer have this

## Overview

- **Who it's for**: Students, researchers, educators, and professionals who regularly gather and organize information from the web for study, research, or collaborative projects.
- **What you get**: A personal library for saving and tagging bookmarks, plus tools to highlight text and add sticky-note annotations directly on web pages and PDFs. An outliner helps structure research hierarchically, and Groups let you share bookmarks and annotations with classmates or colleagues. A premium option archives pages permanently, preserving your annotations even if the original source goes offline.
- **How it works**: Save pages to your library via the browser extension or bookmarklet, tag and organize them for later retrieval, then highlight and annotate directly on the page as you read. Share tagged collections or join Groups to collaborate with others on shared research.

## Profile

- **License**: Proprietary (verified 2026-07-08)
- **Pricing model**: Freemium (verified 2026-07-08)
- **Starts at**: ?
- **Platforms**: Web, Browser extension, iOS, Android
- **Status**: active (verified 2026-07-08)

## Ranked alternatives

| # | App | Alt Score | Licence | Platforms |
|---|-----|-----------|---------|-----------|
| 1 | [Raindrop.io](https://altcatalog.com/alternatives/raindropio.md) | 91 | Proprietary | iOS, Android, macOS, Windows |
| 2 | [Linkwarden](https://altcatalog.com/alternatives/linkwarden.md) | 82 | AGPL-3.0 | Web, iOS, Android, Browser extension |
| 3 | [LinkAce](https://altcatalog.com/alternatives/linkace.md) | 73 | GPL-3.0 | Web |
| 4 | [Linkding](https://altcatalog.com/alternatives/linkding.md) | 73 | MIT | Web, Browser extension |
| 5 | [Pinboard](https://altcatalog.com/alternatives/pinboard.md) | 68 | Proprietary | Web, Browser extension |
| 6 | [Servas](https://altcatalog.com/alternatives/servas.md) | 64 | GPL-3.0 | Web, Browser extension |
| 7 | [mymind](https://altcatalog.com/alternatives/mymind.md) | 60 | Proprietary | Web, iOS, Android, macOS |
| 8 | [Bookmark Ninja](https://altcatalog.com/alternatives/bookmark-ninja.md) | 55 | Proprietary | Web, Browser extension |
| 9 | [Shaarli](https://altcatalog.com/alternatives/shaarli.md) | 55 | zlib/libpng | Web |
| 10 | [Linkinize](https://altcatalog.com/alternatives/linkinize.md) | 50 | Proprietary | Web, Browser extension |

Alt Score = Verified coverage (90%) + Visibility (10%). See https://altcatalog.com/how-alt-score-works/

## Feature comparison

Legend: Yes / No / Partial / ? (not verified).

| Bookmark managers checklist | Diigo | Raindrop.io | Linkwarden | LinkAce | Linkding | Pinboard |
|---|---|---|---|---|---|---|
| Pricing model | Freemium | Freemium | OSS + paid hosting | Free | Free | Subscription |
| Starts at | ? | Free | $3/mo | Free | Free | $22/year |
| License | Proprietary | Proprietary | AGPL-3.0 | GPL-3.0 | MIT | Proprietary |
| Platforms | Web, Browser extension, iOS, Android | iOS, Android, macOS, Windows, Web, Browser extension | Web, iOS, Android, Browser extension | Web | Web, Browser extension | Web, Browser extension |
| Browser extension | Yes | Yes | Yes | No | Yes | Yes |
| Full-text search of pages | Yes | Yes | Yes | No | No | Partial |
| Tags & collections | Yes | Yes | Yes | Yes | Yes | Yes |
| Sharing | Yes | Yes | Yes | Yes | Yes | Yes |
| Self-hostable | No | No | Yes | Yes | Yes | No |
| Broken-link detection | ? | Yes | No | Yes | No | Partial |
| Highlights | Yes | Yes | Yes | No | No | No |
| API | Yes | Yes | Yes | Yes | Yes | Yes |
| Import from browser | Yes | Yes | ? | Yes | Yes | Yes |
| Archive page copies | Yes | Yes | Yes | Yes | Yes | Partial |

## Sources

Sources for Diigo. Each alternative is sourced on its own page.

- **License**: Proprietary — <https://www.diigo.com/about> (verified 2026-07-08)
  - Quote: “Diigo is supported by a freemium business model, with the paid subscription by users being the primary revenue source.”
- **Pricing model**: Freemium — <https://www.diigo.com/about> (verified 2026-07-08)
  - Quote: “Diigo is supported by a freemium business model, with the paid subscription by users being the primary revenue source.”
- **Platforms**: Web, Browser extension, iOS, Android — <https://www.diigo.com/tools> (verified 2026-07-08)
  - Quote: “Diigo Extension For Chrome … Diigo Extension For Firefox … Diigo for mobile … iOS … android”
- **Status**: active — <https://www.diigo.com/about> (verified 2026-07-08)
  - Quote: “Over the years, as dozens of players in the same space have closed shops, often leaving users stranded, Diigo has steadfastly improved”
- **Browser extension**: Yes — <https://www.diigo.com/tools> (verified 2026-07-08)
  - Quote: “Diigo Extension For Chrome … Install … Diigo Extension For Firefox … Install”
- **Full-text search of pages**: Yes — <https://www.diigo.com/learn_more/research> (verified 2026-07-08)
  - Quote: “you can search your collections not only by tags, but also by full-text, including highlights, sticky notes, titles, etc of the web pages.”
- **Tags & collections**: Yes — <https://www.diigo.com/learn_more/research> (verified 2026-07-08)
  - Quote: “Tags and lists are two different ways to organize information.”
- **Sharing**: Yes — <https://www.diigo.com/learn_more/share> (verified 2026-07-08)
  - Quote: “You can keep things private or public, or shared with a group.”
- **Self-hostable**: No — <https://www.diigo.com/about> (verified 2026-07-08)
  - Note: Cloud-only SaaS; no self-hosting offered.
  - Quote: “Diigo is supported by a freemium business model, with the paid subscription by users being the primary revenue source.”
- **Highlights**: Yes — <https://www.diigo.com/learn_more/research> (verified 2026-07-08)
  - Quote: “Diigo allows you to highlight text and attach sticky notes to specific parts of web pages.”
- **API**: Yes — <https://www.diigo.com/api_dev> (verified 2026-07-08)
  - Quote: “The Diigo API allows you to build apps that interact with the Diigo service.”
- **Import from browser**: Yes — <https://www.diigo.com/tools/import_all> (verified 2026-07-08)
  - Quote: “You can import bookmarks from other websites like Delicous, Pocket and Instapapar, or various browsers like Chrome, Firefox, Safari and so on.”
- **Archive page copies**: Yes — <https://www.diigo.com/learn_more/research> (verified 2026-07-08)
  - Quote: “Archive pages forever and make them searchable, too … Archive multiple versions of the same URL”

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Ranked by verified data, never by who paid. https://altcatalog.com/trust/