Diigo
Online research library combining tagged bookmarks, webpage highlighting, sticky notes and group knowledge sharing.
Meet Diigo
Diigo saves useful websites alongside annotations, helping users retain both a source link and the passages or observations that made it relevant. Its research-oriented approach extends beyond ordinary browser favorites through organized outlines and collaborative collections.
The official tools page documents a Chrome extension and a cross-browser Diigolet bookmarklet. Other native app and extension listings need separate current confirmation. Free and paid account options make it relevant to both occasional collectors and users building a larger research library.
- Payment structure
- Freemium subscription
- Hosting model
- Vendor-hosted service
- Free option
- Yes - free account
- App types
- Web app / website service | Browser extension | Bookmarklet
Payment and hosting
Free account and paid upgrades; current numerical plan rates not independently captured.
| Vendor-hosted | Yes |
|---|---|
| Self-hosted | Not listed |
| Open-source status | Not listed |
Where you can use it
| iPhone / iOS | Not listed |
|---|---|
| Android | Not listed |
| macOS | Not listed |
| Windows | Not listed |
| Linux | Not listed |
| Web app | Yes |
| Progressive web app | Not listed |
| Command-line tool | Not listed |
| Chrome extension | Yes |
|---|---|
| Safari extension | Not listed |
| Firefox extension | Not listed |
| Edge extension | Not listed |
| Bookmarklet | Yes |
| Mobile share capture | Not listed |
| Other browser support | Not separately verified |
What to check before choosing
Limitations and verification: Exact pricing and current iOS/Android/Firefox/Safari distribution were not fully verified.
Research snapshot: September 17, 2026. Official public pages / publisher documentation reviewed; not hands-on tested.
Publisher sources
Compare the recorded detail with the publisher’s latest documentation. See how this directory is researched.
More tools to explore
Compare workflows and support details, then decide what fits your collection.
Anybox
Native Apple-platform bookmark manager with nested organization, fast search and page archives.
ArchiveBox
Self-hosted web archive that preserves bookmarked URLs in multiple durable formats.
Are.na
Collection-based knowledge network that connects links, images, notes and files through reusable channels.