Hypotheses

Paid

Annotate webpages, collaborate, and share notes for real-time discussions and research.

5.0

New AI ToolsContact

Inputs: urlOutputs: text

Type

Saas

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About Hypotheses

Hypotheses is an innovative web annotation tool that allows users to easily add notes, comments, and other annotations to any webpage. It is an open-source platform that offers the ability to research, collaborate, and discuss the content of websites in real-time. By leveraging the power of collaborative annotation, Hypotheses makes it easy for users to engage with online content in an engaging and meaningful way.With Hypotheses, users can quickly add annotations to any web page, allowing them to interact with websites in a more meaningful and engaging way. Annotations can be shared with other users, and they can be used as a way to start conversations or even launch debates. With its easy-to-use tools and features, Hypotheses makes it easy for users to research, think critically, and discuss topics that matter to them.Hypotheses is a great tool for anyone who wants to take their online research and collaboration to the next level.

Key Features

Easily add notes, comments, and other annotations to any webpage. 2. Research, collaborate, and discuss website content in real-time. 3. Share annotations with other users and start conversations.

Pros & Cons

Pros

Free open-source core with optional hosted service

Enhances critical thinking and engagement with web content

Seamless real-time collaboration across users

Works on any webpage without site owner permission

Privacy controls for annotations

Extensible via APIs for integrations

Cons

Requires browser extension for full functionality
Annotations tied to specific web versions may break if pages change
Hosted service pricing requires contacting sales
Limited native mobile support
Potential privacy concerns with public annotations

Best For

Easily add notes, comments, and other annotations to any webpage. 2. Research, collaborate, and discuss website content in real-time. 3. Share annotations with other users and start conversations.

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FAQ

Is Hypotheses free to use?

The browser extension and open-source software are free, but advanced hosted features may require contacting sales for pricing.

How do I start annotating a webpage?

Install the browser extension from the Hypotheses website or use the bookmarklet, then select text on any page to add notes.

Can multiple people annotate the same page?

Yes, it supports real-time collaborative annotations visible to shared groups or publicly.

Does it work on PDFs?

Yes, Hypotheses supports annotating PDFs uploaded via the sidebar or via integrations.

Is it open-source?

Yes, the entire platform is open-source, available on GitHub for self-hosting or contributions.

What browsers are supported?

Chrome, Firefox, Safari, and Edge via official extensions.