Cost / License
- Freemium (Pay once)
- Proprietary
Platforms
- iPhone
- iPad
- Firefox
- Google Chrome
- Microsoft Edge



Diigo is described as 'Save, annotate, and organize web resources with highlighters, sticky notes, cross-device sync, Outliner, advanced search, and flexible sharing options' and is a very popular bookmark manager in the web browsers category. There are more than 100 alternatives to Diigo for a variety of platforms, including Web-based, Google Chrome, Mozilla Firefox, Mac and iPhone apps. The best Diigo alternative is Raindrop.io, which is free. Other great apps like Diigo are wallabag, Karakeep, Memex and Linkwarden.



Use pinplz to save anything on the web, organize your bookmarks, share and discover interesting content


Kontxt is an inline communication and engagement tool that adds live collaboration and interactivity to digital content. Enterprise productivity. Remote education. Site owner revenue. Personal social news aggregation, rating, sharing, and discussion.




Akonter bookmarks is a social bookmarking service which lets you save favorites URLs public or private and share bookmarks by Tags, particularly shopping, business, services and marketing websites.
Watch It Later is a premium bookmarking tool focused on helping you manage your favorite online videos and images. WIL has built in embed support for Youtube, Vimeo, and others. Take notes, create custom galleries, and save links via text message.
Simple bookmarking service, using a SQLite database to store bookmarks, supporting tags and automatic title fetching.
AnnoPad is an URL Specific Notepad.
With this tool, you can create notes for specific website addresses. Annotate your important notes with the easy to use, URL specific notepad! Aside from notetaking, you can also use this as a "smart" bookmarking tool.
This notepad.





cosmicding is a linkding companion which provides an alternative frontend based on libcosmic.


Free open-source bookmark manager with customisable nested tags. Superfast and lightweight. All data is stored locally and secure.





With MarkForLater (formerly 33Notes) you can save instantly or bookmark anything from the web and read it later on any device. Save comments and text selection from any webpage.