No. 10 of 32 ·Unit Testing Frameworks

Hypothesis

Web · API · Extension

Freedom report

Two barsScore 6.4

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely1 of 6 device platforms
DocumentedPlans, terms and facts published

Hypothesis is ranked #10 of 32 in unit testing frameworks on Freedom251. It runs on API, Browser extension, Web. There is a free plan.

Hypothesis plans and pricing

All plans

Free Free Per student/yearly Core annotation · Private groups · Self-service support web.hypothes.is · 4 Oct 2026

Bronze Not published Per student/yearly Core annotation · LMS integration · Up to 1,000 user seats · 1 annual training session · Standard email support web.hypothes.is · 4 Oct 2026

Silver Not published Per student/yearly Core annotation · LMS integration · Up to 2,000 user seats · Advanced analytics · Auto-grading · Hypothesis Academy web.hypothes.is · 4 Oct 2026

Gold Not published Per student/yearly All Silver features · Up to 3,000 seats · Unlimited training · Dedicated CSM · Premium support · Quarterly check-ins web.hypothes.is · 4 Oct 2026

Custom solution Not published Contact sales Custom solution web.hypothes.is · 4 Oct 2026

Compared on unit testing frameworks

Supported languages: Python
Parameterized cases: Yes
Property-based checks: Yes

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The record

Purpose: Hypothesis adds collaborative annotations to digital readings so students can highlight passages, ask questions, and respond to peers in context.
Reading formats: The product supports annotation of web pages, PDFs, EPUB files, YouTube videos, and content from VitalSource and JSTOR.
Integrations: Hypothesis integrates with Canvas, Blackboard, Moodle, D2L Brightspace, and Sakai through LTI.
Gradebooks: Annotations sync with LMS gradebooks, including Canvas SpeedGrader.
Education capabilities: Education features include private groups, advanced analytics, auto-grading, and an LMS reporting dashboard for annotation counts and engagement.
Institutional use: Hypothesis describes its institutional audience as colleges and universities, faculty and instructors, students, and publishers or partners.
Security: Hypothesis says it has completed a Cloud Security Alliance CAIQ assessment, documents SOC compliance, and regularly tests its software and network for vulnerabilities.
Privacy: Hypothesis says it does not monetize student data.
Support: The Free package includes self-service support; Bronze includes standard email support, and Gold includes premium support and a dedicated customer success manager.
Personal use: Hypothesis says personal accounts and collaboration are always free.
Browser availability: The Chrome extension also works in Chromium-based browsers including Brave, Vivaldi, and Microsoft Edge, while Firefox and Safari users can use a bookmarklet.
Platform limitation: Annotating locally saved PDFs requires a desktop or laptop and is not available on mobile devices.
Price from: Free

Where it ranks on Freedom251

Best Unit Testing Frameworks in 2026#10 of 32

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Sources

web.hypothes.is/about-us/· checked 4 Oct 2026
web.hypothes.is/pricing-page/· checked 4 Oct 2026
web.hypothes.is/security/· checked 4 Oct 2026
web.hypothes.is/web-app-start/· checked 4 Oct 2026
web.hypothes.is/help/annotating-locally-saved-pdfs/· checked 4 Oct 2026