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Helps you find Open Access copies of paywalled scientific articles, by utilizing Unpaywall and core.ac.uk APIs Unlock Open Access Easily find legal, free-to-read versions of paywalled scientific articles. Open Access Helper uses the trusted APIs from unpaywall.org and core.ac.uk to locate open access copies, making research more accessible for students, researchers, and curious minds. How It Works When you view a research article, the extension detects its DOI (Digital Object Identifier) and checks for an available open access version. Simply click the Open Access Helper badge to access the document! As you hover over the badge, it will indicate whether you’ll be accessing the “Published Version,” “Accepted Version,” or “Submitted Version.” EZProxy or OpenAthens Made Simple If your university library uses EZProxy or OpenAthens for off-campus access, this extension makes it seamless to connect. Just set your institution’s domain (e.g., harvard.edu), and with one click, you can proxy the current page through your library’s server. 100% Legal and Privacy-Respecting Every link provided leads to officially open-access or legally archived copies of research articles. Plus, Open Access Helper doesn’t collect personal data—just anonymous usage stats to improve functionality. Open Source & Developer-Friendly This is a passion project—check out the code, share feedback, or report bugs. Your contributions and ideas are always welcome! 👉 Get started today—make research easier and more accessible with Open Access Helper!
Lazy Scholar
Academic research assistant - find full-text PDFs, citations, and analyze papers Lazy Scholar automatically detects scientific articles as you browse and provides instant access to full-text PDFs, citation and journal metrics, research integrity checks, and much more: FIND FULL-TEXT ACCESS Stop hitting paywalls. Lazy Scholar searches multiple sources simultaneously: • PubMed Central (PMC) - Free official versions • Europe PMC - Open access and author manuscripts • Open Access repositories • Direct PDF links CITATION METRICS AT A GLANCE • Citation counts from Google Scholar, OpenAlex, and Semantic Scholar • Influential citations - papers that heavily cite this work • Citation percentile - see how this paper ranks in its field • Web attention - mentions on Reddit, Twitter/X, Wikipedia, news, and blogs • Related papers recommendations RESEARCH INTEGRITY • Retraction alerts - know immediately if a paper was retracted • Expression of Concern notices • Published corrections and errata • Preregistration detection • PubPeer comments - post-publication peer review • Hypothesis annotations SIDEBAR ANALYSIS PANEL • References tab - view all citations, verify they exist, check for retractions • Outline extraction - automatic section parsing (Abstract, Methods, Results, etc.) • Data & code links - find supplementary materials and repositories • Statistical extraction - p-values, confidence intervals, test statistics CONVENIENCE FEATURES • Right-click to search Google Scholar or PubMed • Omnibox search - type "ls" then your query • One-click PDF download PERFECT FOR • Graduate students and postdocs • Faculty and researchers • Librarians and information specialists • Science journalists • Anyone reading academic literature
CORA: Understand PubMed Citation Contexts
Understand citation contexts as you browse PubMed papers. This extension aims to help people better understand the citation contexts of a PubMed article. We extracted over 100 million citation contexts from semanticscholar.org (especially, S2ORC: Allen AI's Open Research Corpus), and trained a deep learning model to classify those citation contexts into different types so that readers know how an article was cited by others. In addition, we also provide users with a search function to find EurekAlert! science news releases and NSF/NIH grants that are related to a PubMed article. This project is supported by IMLS grant RE-07-14-0015. Team members: Yingya Li, Yatish Hegde, Jun Wang (chrome extension developer), and Bei Yu (PI).
Scholarcy Browser Extension
Scholarcy™ is the solution to that pile of papers on your virtual desk. It can save up to 70% of the time needed to get the key information from an article, helping you with literature screening and reviews. This Extension gives you the key points of any article or research paper you have open in your browser. It creates a referenced summary with important points highlighted and generates a background reading list for those new to a field. Need to see how a paper builds on previous research? Our new 'Comparative Analysis' engine highlights this for you. Subscribers to our premium app, Scholarcy Library, will get unlimited use of this Extension and can also save, share, annotate and export their Summary Flashcards. Scholarcy locates open-access PDFs for each reference from Google Scholar, arXiv and elsewhere, and can also be configured to extract figures and tables. To provide this service, our Extension needs to read and process the contents of the current web page. Alternatively, it will locate the PDF for the article. Use the new 'Source priority' option to switch between the HTML and PDF processing. For PDF files, the article must be open access. For more information on how we use this data, please read our FAQ: https://www.scholarcy.com/faq/ and Privacy Policy: https://www.scholarcy.com/privacy-policy/
CoCites [Beta]
CoCites is an entirely new method for searching scientific literature. The method finds and ranks articles that are frequently cited together with a selected article. Articles that are frequently cited together tend to be of similar topics. CoCites finds co-cited articles and presents a ranking of most frequently co-cited articles. CoCites is ideal for students, as well as for scientists interested in topics outside their field of expertise—it helps them find relevant literature without the struggle of finding or even knowing the right keywords. This browser extension adds CoCites buttons to articles in PubMed and Google Scholar. One click shows the articles that are frequently cited together with the selected article. No registration is needed unless you want to export the search results. Read below about the permission that CoCites needs to install the extension. After you install the browser extension, the tool is ready for use. Go to PubMed or Google Scholar and CoCites is already working for you. For more information about the method and download, visit www.cocites.com. Further information: If you have any questions, email us at info@cocites.com. Why we need the permission? We ask permission to: Read and change all your data on the websites you visit We need to read your data to find out: - when you visit the PubMed and Google Scholar webpages. Many users visit PubMed within their university environments. The URLs of PubMed vary. We need to read your browser activity to recognize the URL of your PubMed. - for which articles you want a CoCites search button. We need to read the data on the PubMed or Google Scholar page to find out for which articles you want a CoCites search button. We don’t store any of your information or browser history. The university-specific URL of PubMed is temporarily stored in a session cookie, which is deleted after you close the browser.
