Hypothesis vs MarkUp
Hypothesis
web.hypothes.isMarkUp
markup.ioSide by side
| Figure | Hypothesis | MarkUp |
|---|---|---|
| Price from | Free | $79/mo |
| Free plan | Yes | — |
| Free trial | — | Yes |
| Open source | Yes | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Plans published | 5 | 19 |
| Spec score · Web Annotation Tools | 8.5 (#6) | 8.6 (#4) |
| Spec score · Markup Software | 8.6 (#10) | 8.7 (#5) |
| API | The public API supports authentication plus creating, updating, deleting, searching and moderating annotations and managing users and groups. | The public REST API supports server-side automation, MarkUp management, workspace operations, users and webhooks through bearer API keys. |
| Documentation depth | The help center lists 37 annotation articles, 47 public-web articles and 124 LMS articles, plus installation and troubleshooting guides. | The developer hub includes API references, SDK installation, authentication, events, plugins, theming and resource documentation, with pages updated in September 2026. |
| Rating on Chrome Web Store | 3.9 out of 5 from 225 ratings. | MarkUp For Chrome is rated 4.2 out of 5 from 34 ratings and shows 30,000 users. |
| Rating on G2 | 4.4 out of 5 from 5 reviews. | MarkUp averages 4.6 out of 5 from 35 reviews on G2. |
| Security | Hypothesis says its security program includes static code analysis, dependency vulnerability monitoring, security assessments, and third-party penetration testing. | Enterprise includes SOC II documentation, SSO (SAML), and a custom DPA. |
| Support | The pricing page lists self-service support for Free and Bronze, standard email support for Bronze, and premium support with a dedicated customer success manager for Gold. | Business and Enterprise include priority support, described as moving requests to the front of the queue for faster responses. |
| Supported content | Hypothesis supports annotation of web pages, PDFs, EPUB files, YouTube videos, and content from VitalSource and JSTOR. | The service supports more than 30 file types, including websites, images, PDFs and videos. |
| What it does | Hypothesis adds a collaborative annotation layer to webpages, PDFs, videos, images and electronic texts so users can highlight, comment and discuss content in context. | MarkUp is a visual collaboration service for placing contextual comments on websites and uploaded digital content. |
Plans
Hypothesis
- FreeFree
- BronzePrice not published
- Custom solutionPriced on request
- GoldPrice not published
- SilverPrice not published
MarkUp
- Pro (50 MarkUps)$79 a month
- Pro (50 MarkUps/month)$79 a month
- Pro (75 MarkUps)$99 a month
- Pro (75 MarkUps/month)$99 a month
- Pro (100 MarkUps)$129 a month
- Pro (100 MarkUps/month)$129 a month
- Business (200 MarkUps)$499 a month
- Business (200 MarkUps/month)$499 a month
- Business (400 MarkUps)$649 a month
- Business (400 MarkUps/month)$649 a month
In their own words
Hypothesis
Hypothesis adds shared annotations to digital course materials, letting learners mark passages, ask questions, and reply to peers alongside the content. Users can create private highlights and page notes, add tags, and hold threaded discussions. Supported material includes web pages, PDFs, EPUB files, YouTube videos, and content from VitalSource and JSTOR. For institutional use, Hypothesis lists LTI 1.3 integrations with Canvas, Blackboard, Moodle, D2L Brightspace, and Sakai; annotations can also sync with LMS gradebooks, including Canvas SpeedGrader. A free account is available for personal use and collaboration. The web app works with a Chrome extension on Chrome and other Chromium browsers, or a bookmarklet in Firefox and Safari. Hypothesis also offers API access, exports in JSON, plain text, CSV, and HTML, and JSON import. The Free plan costs nothing, billed per student/yearly, and includes core annotation, private groups, and self-service support. The project was founded as an open-source project in 2011.