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Good Annotations is a web-based annotation tool for adding notes and comments to online content. It is aimed at individuals and teams who need to discuss or review web pages without modifying the original site.
💡 Pick it for free, open-source annotations with strong support for research, teaching, and shared discussions.
Hypothesis is a tool for annotating web pages and PDFs. It allows collaborative discussion and annotation.
💡 Choose it when annotations need to become part of a searchable bookmark and research library.
Diigo is a powerful research tool and a knowledge-sharing community.
Free / Premium plans available
💡 Pick it for professional website and creative-asset reviews with location-based client feedback.
MarkUp is a powerful text editor with advanced features for coding and writing. It offers a clean interface and supports various programming...
💡 Choose it when clients need to review live websites through simple, shareable feedback links.
Pastel is a digital design tool for collaboration and feedback on designs.
Starting at $12 per user per month
💡 Pick it for building a searchable social library of highlights from articles, PDFs, and videos.
Glasp is a social knowledge-management service with tools for highlighting, annotating, and summarizing web content and YouTube videos. It serves readers, researchers,...
Freemium
💡 Choose it when annotations must become developer-ready bug reports with technical context and task tracking.
BugHerd is a visual feedback tool for websites. It allows users to point, click, and describe issues directly on a website to...
Starting from $29/month
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