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Day 60: new resources are added every day. See what's new
Best Productivity ResourcesBy Shushant LakhyaniVerified creator

Browser Extension

Hypothesis

Highlight and annotate any web page or PDF, privately or in groups.

Visit HypothesisFree4.5

Built with love by Shushant Lakhyani. Building bestproductivityresources.com

Free: 1,100+ ways people make money onlineFree: 399+ ways to make money online

What is Hypothesis?

Hypothesis is an open-source annotation tool that lets you highlight and comment on web pages and PDFs through a browser extension. It is free for personal use and collaboration, so you can keep private notes, share annotations in a group or join public discussions on articles.

Pros

  • Annotate almost any page
  • Private or group notes
  • Free and open source

Cons

  • Extension is built for Chromium browsers
  • Education features are paid

Who should use Hypothesis

Students, researchers and reading groups who want to discuss articles and papers in context.

Who may not need it

People who rarely read or annotate online.

Hypothesis alternatives

Similar resources to Hypothesis, picked from the directory.

All Research resources

MIT Deep Learning Book

Focus: deep learning, book and mit. Shares pdf with Hypothesis. A course, not a browser extension. Rated 4.7 (Hypothesis: 4.5).

CourseFreeWeb
4.7Visit

Feedly

Focus: rss reader, news and blogs. Shares reading with Hypothesis. A web app, not a browser extension. Freemium (Hypothesis: Free). Adds iOS and Android. Same 4.5 rating.

Web AppFree planWeb, iOS
4.5Visit

Unpaywall

Focus: open access, research papers and academic. Also in Research and Reading, like Hypothesis. Adds Firefox. Rated 4.6 (Hypothesis: 4.5).

Browser ExtensionFreeChrome, Firefox
4.6Visit

Glasp

Focus: highlights, annotations and read later. Also in Reading and Research, like Hypothesis. Adds Safari. Rated 4.4 (Hypothesis: 4.5).

Browser ExtensionFreeChrome, Safari
4.4Visit

arXiv

Focus: research papers, preprints and open access. Also in Research and Reading, like Hypothesis. A website, not a browser extension. Rated 4.8 (Hypothesis: 4.5).

WebsiteFreeWeb
4.8Visit

ClaudeEditor's pick, verified

Focus: ai, long context and analysis. Also in Research and Reading, like Hypothesis. An AI tool, not a browser extension. Freemium (Hypothesis: Free). Adds iOS, Android and macOS. Rated 4.7 (Hypothesis: 4.5).

AI ToolFree planWeb, iOS
4.7Visit

Free alternatives to Hypothesis

Free resources that cover similar ground.

Google Scholar

Focus: academic search, citations and research papers. Also in Research and Reading, like Hypothesis. A website, not a browser extension. Rated 4.7 (Hypothesis: 4.5).

WebsiteFreeWeb
4.7Visit

Internet Archive

Focus: digital library, wayback machine and archives. Also in Research and Reading, like Hypothesis. A website, not a browser extension. Rated 4.7 (Hypothesis: 4.5).

WebsiteFreeWeb
4.7Visit

Linkwarden

Focus: bookmarks, read it later and web archive. Also in Research and Reading, like Hypothesis. A web app, not a browser extension. Adds iOS, Android and Firefox. Rated 4.7 (Hypothesis: 4.5).

Web AppFreeWeb, iOS
4.7Visit

NetNewsWire

Focus: rss reader, mac app and news. Also in Reading and Research, like Hypothesis. A desktop app, not a browser extension. Adds macOS and iOS. Rated 4.7 (Hypothesis: 4.5).

Desktop AppFreemacOS, iOS
4.7Visit

Screenity

Focus: screen recorder, loom alternative and chrome extension. Shares annotation with Hypothesis. Rated 4.7 (Hypothesis: 4.5).

Browser ExtensionFreeChrome
4.7Visit

Anki

Focus: spaced repetition, flashcards and study. Also in Research and Reading, like Hypothesis. A desktop app, not a browser extension. Adds macOS, Windows and Linux. Rated 4.6 (Hypothesis: 4.5).

Desktop AppFreemacOS, Windows
4.6Visit
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