Better reading and research with annotations, highlighter, sticky notes, archiving, bookmarking and… Created by Diigo Inc. Diigo – Your Learning, Simplified.CollectSave and tag your online resources for easy access anytime, anywhereAnnotateAnnotate web pages and PDF’s directly as you browse onlineOrganizeOrganize your links, references and personal input to create a structured research base through OutlinerShareShare your research with friends, classmates.
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| # | Image | App Name | Features | Platforms | Price | Website Link |
| 1 |  | Google Bookmarks | Web | Free | Website | |
| 2 |  | Shaarli | Web | Mac Windows Self-Hosted Cloudron Linux | Free | Website |
| 3 |  | Pinboard | Web | Commercial | Website | |
| 4 |  | Raindrop.io | Web Chrome | Mac Safari Windows Android iPhone Vivaldi Browser Opera Firefox Android Tablet Yandex.Browser iPad | Freemium | Website |
| 5 |  | Pearltrees | Web Chrome | Android iPhone Firefox Android Tablet iPad Software as a Service (SaaS) | Freemium | Website |
| 6 |  | Memex | Web Chrome | Vivaldi Browser Firefox | Freemium | Website |
| 7 |  | Flamory Alternatives and Similar Software | Windows Internet Explorer Google Chrome Microsoft Office Powerpoint Microsoft Office Word Adobe Reader Notepad++ Firefox Adobe Acrobat | Free for personal use | Website | |
| 8 |  | Web Chrome | Mac Safari Android iPhone Blackberry Opera Firefox Android Tablet Windows Phone iPad | Freemium | Website | |
| 9 |  | Tagpacker | Web Chrome | Free | Website | |
| 10 | | Hypothes.is Alternatives and Similar Software | Online Google Chrome Firefox | Free | Website |