Last updated on 12 February 2025
Hypothesis is an online tool forannotate, comment, rank and share online resources found on the web. It is a free and open source tool well suited for use in the world of research and education.

A tool that lends itself well to the need that is not new to annotate texts. Hypothesis simply allows you to do this on online texts by adding sharing and group work functions.
Hypothesis provides an extension for Chrome or a bookmarklet for other browsers that will make it easier to create a kind of layer on the web page that you want to annotate. By the way, the tool provides a unique URL to share it.
From this page, You can highlight text passages in color. You can also add comments. All these notes and comments are kept in memory and accessible from a pane on the right of the screen. Notes and comments are indexed and a full-text search engine allows you to find everything instantly. Ideal for personal work. But the real added value of Hypothesis lies in its collaborative annotation functions.
You can invite other users to annotate or comment on the same webpage. They will not need to register for the service to consult your own annotations, but will need to do so if they wish to add their grain of salt to it.

The rendering is very successful and perfectly readable. For example, a teacher can highlight the passage of a text and ask a question to students with whom they will share the page. Also practice the possibility of creating a private group on Hypothesis that will contain several links to pages shared with a class group and only with it. That's great.
A tool to discover that can meet many uses. Only small regret, you have to provide an email address to register, which is never very practical if you want to work with high school students.
Hypothesis is free and free.
Link: Hypothesis
super nugget!!!