Browser Extension
Unpaywall is a free Chrome and Firefox extension that detects legal open-access copies of scholarly articles when users visit paywalled papers. It displays a green tab linking to available full text from university and government repositories.
Overview
6 featuresBrowser Extension sits in PulseGate's Read-it-later & curation category. It focuses on finding legally accessible full-text versions of research papers hidden behind publisher paywalls. Browser Extension is a consumer product aimed at researchers, students, and academic readers. Browser Extension costs nothing to use. Browser Extension is available on the web and embeddable surfaces.
OurResearch builds and maintains Browser Extension, and it first shipped in 2015. The project is developed in the open on GitHub with 395 stars and 1 commit in the last 90 days. Key capabilities include open-access discovery, paywall detection, and green access tab. It exposes integrations via a public API.
Summary written by a language model from the project’s public pages.
- Open-access discovery
- Paywall detection
- Green access tab
- Research article lookup
- Chrome extension
- Firefox extension
Built with & integrations
- Claude Code
- commit 90d0dd9ad72b · since Jan 2026
- Vue
- bdata-v- in the HTML
Trust & compliance
Indexing history
1What PulseGate has recorded for this listing
Frequently asked questions about Browser Extension
- What does Browser Extension do?
- Browser Extension focuses on finding legally accessible full-text versions of research papers hidden behind publisher paywalls. It is catalogued under Read-it-later & curation on PulseGate.
- Who should use Browser Extension?
- Browser Extension is a consumer product built for researchers, students, and academic readers.
- Is Browser Extension free?
- Yes — Browser Extension is free to use.
- What platforms does Browser Extension run on?
- Browser Extension runs on the web and embeddable surfaces.
- Is Browser Extension still maintained?
- The GitHub repository shows 1 commit in the last 90 days.
- Who makes Browser Extension?
- Browser Extension is developed by OurResearch, based in the United States.
- When did Browser Extension launch?
- Browser Extension first shipped in 2015.
- Is Browser Extension open source?
- Browser Extension has a public GitHub repository.
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