These tools are created and maintained by the Hypothesis community. Some are code experiments, some are full implementations being adopted by users every day.  If you have a project or know of one that should be listed here, please let us know!

Learning Management Systems (LMS)

LMS App, from Hypothesis


Description: An official Hypothesis application that enables integration with any LMS supporting IMS Learning Tools Interoperability (LTI), such as Blackboard Learn, Desire2Learn Brightspace, Instructure Canvas, Moodle, Sakai, and Schoology, to provide capabilities including single sign-on and automatic private group provisioning for each class.

Content Management Systems (CMS)

WordPress, from Hypothesis Labs


Screencast: (illustrates PDF activation)

Description: Built by Jake Hartnell and Benjamin Young. Adds the Hypothesis sidebar to your wordpress website. Converts links to PDFs in the Media folder to links.

WordPress Hypothesis aggregator, from Kris Shaffer


Description: A WordPress plugin that allows you to aggregate Hypothesis annotations on a single page or post on your WordPress blog.

OJS Hypothesis Plugin, from Alec Smecher


Description: adds Hypothesis integration to the public article view of Open Journal Systems, permitting annotation and commenting.

Omeka Annotator, from Erin Bell


Description: A Hypothesis text annotation plugin for Omeka., from Hypothesis Labs


Description: A place to upload PDFs and other documents for annotation using Hypothesis, as well as a Google Drive plugin for PDFs.

Drupal, from Little Blue Labs


Description: This simple module embeds Hypothesis into your Drupal site.

Archiving and downloading annotations

Annotation viewing and export, from Hypothesis Labs



Description:  View annotations by user, group, URL, or tag. Export results to HTML, CSV, text, or Markdown.

Hypothesis collector, from John Stewart


Description:  Creates google sheets with annotations based on search queries.

Save and analyze H annotations, from Roderic Page


Description: Places annotations on a Cloudant database for analysis.

Added functionality

Slack notifications, from Hypothesis Labs


Description: Receive Slack notifications  made by specific users, or groups, or on specific urls or tags.

Hypothesis EPUB reader, from Jake Hartnell


Description: A mashup of the open source Hypothesis and Epub.js projects.

Annotran: Annotate to translate, from Martin Eve


Description: Annotran is an extension to the hypothesis annotation framework that allows users to translate web pages themselves and to view other users’ translations. Read about it here and here.

Annotation Powered Survey, from Hypothesis Labs


Description: A toolkit for building online surveys that ask questions to which answers are annotations.

ClinGen Workflow, from Hypothesis Labs


Description: An approach to annotation-powered biocuration.

CopyAnnotations, from Hypothesis Labs


Description: Copy top-level annotations from one URL (and/or group) to another.

TagRename, from Hypothesis Labs


Description: Rename Hypothesis tags.

Programming tools

Hypothesis Ruby Gem, from Javier Arce


Description: Unofficial ruby gem for the Hypothesis API.

Hypothepy, from EMBOPress


Description: A lightweight Python API for

Pypothesis, from Kris Shaffer


Description:  Python scripts for interacting with the Hypothesis API.

Hypothesis, from Hypothesis Labs


Description: Yet another Python wrapper for the Hypothesis API.

Hypothesisr, from Matthew Lincoln


Description: An R package that allows users to add, search for, and retrieve annotation data.

HypothesisPHP, from Alec Smecher

Description: A simple PHP wrapper for the Hypothesis API.

Hypush, from Tom Gillespie

Monitor the Hypothesis websocket in order to push realtime notifications to other channels.




Description: This tool finds RRIDs in articles, looks them up in the SciCrunch resolver and creates Hypothesis annotations that anchor to the RRIDs and display lookup results. More info here.



Description: The American Association for the Advancement of Science (AAAS) uses Hypothesis for graduate students to annotate articles using specific highlight colors and categories. More info here.

Extracting structured findings from scientific papers


Description: David Kennedy reviews the literature in his field and extracts findings, which are structured interpretations of statements in scientific papers. He’s using Hypothesis to create reports based on structured annotation. More here.

Hypothesis/Europe PubMed Central


Description: Bring annotations from two systems together in the context of a document.

Infinite Ulysses


Description: created by Amanda Visconti, Infinite Ulysses lets readers of James Joyce’s challenging novel Ulysses while annotating it with their questions and interpretations and perusing annotations from fellow readers.

Other ideas to try

Screen-reader-accessible annotation, from Hypothesis Labs



Description: Use a hotkey to select an element, hear it spoken, and open the annotation editor. More info:

Copy annotation to clipboard, from Hypothesis Labs


Description: Copy the text of the annotation to the clipboard by clicking an icon. More info:

Highlight groups with annotations, from Hypothesis Labs


Description: Highlights the group name with a different color on the dropdown menu, when there are annotations on the group. More info:

Group admin, from Hypothesis Labs


Description: Enables a group of users who have given their H API keys to be subject to admin by an “admin user” who is the H user running the prototype extension. The admin user running can edit or delete annotations by subject users. More info:

Controlled tagging, from Hypothesis Labs

Description: Restrict tags to a controlled list.

Screencast: (manage the list in a Google doc, activate it on a per-Hypothesis-group basis)

Screencast: (source the list from an external ontology service)

Screencast: (embed a single-page app in the annotation body to enable full control of tag interaction and context)

More info:

Search/faceted navigation, from Hypothesis Labs

Description: An early prototype of faceted navigation