VOSviewer

VOSviewer is a free tool for turning bibliographic data into maps of publication relationships and recurring terms. It is best suited to researchers and research organizations studying patterns across scientific literature. Its range of network types and sources is a strong fit for bibliometric work, but the Java requirement and a recent security notice matter when choosing how to run it.

Overview

VOSviewer maps citation, bibliographic coupling, co-citation, and co-authorship relationships, and can visualize terms that occur together in scientific literature. It accepts data from Web of Science, Scopus, Dimensions, Lens, PubMed, Crossref, Europe PMC, OpenAlex, Semantic Scholar, OpenCitations, and WikiData. That breadth gives researchers multiple ways to bring publication data into a focused network analysis.

Network layout and clustering organize those relationships, while English-language text mining extends analysis to terms. Fractional counting and thesaurus-based cleaning provide ways to refine counts and labels. These are useful capabilities for bibliometric mapping, but they do not make VOSviewer a general-purpose literature-review workflow.

Key features

Explore and refine maps

Density and overlay views, zooming, and scrolling help users inspect a map from different angles and levels of detail. High-resolution screenshots can be saved as bitmap or vector files, which suits researchers preparing maps for reports or presentations. The tool’s emphasis remains on visualizing networks rather than broader review management.

Browser sharing and cloud services

VOSviewer Online opens VOSviewer JSON, map, and network files in a browser. Users can share an interactive visualization through a link or QR code, or embed it as HTML. The stand-alone version also supports sharing through Google Drive, Microsoft OneDrive, and Dropbox. Online integration with Digital Science’s Dimensions platform supports creating co-authorship and citation network visualizations there.

The maker provides a manual with current functionality information, along with a video, book chapter, and paper. Those resources can help users understand the tool’s analytical options without changing its central role as a network-mapping application.

Pricing

VOSviewer is free: its Free plan costs free and can be used for any purpose. That makes it a straightforward option for individual researchers and institutions that need bibliometric maps without a software charge. No paid tier is needed to access the stated core offering.

Platforms

VOSviewer is available for Linux, macOS, web, and Windows. The download page provides Windows, macOS, and other-systems builds; the other-systems version runs as a JAR file. Running the stand-alone software requires Java 8 or higher, an extra prerequisite that may complicate setup on machines without a compatible Java installation. VOSviewer Online offers a browser-based route for opening and sharing supported files.

The maker reports that an unauthorized party accessed its website and that a malicious Windows executable was available for download on August 31 from 3:30 to 13:20 CEST. The investigation is ongoing. Windows users should take this notice into account when deciding whether and how to obtain the software.

Who it's for

VOSviewer suits researchers who want to examine citation, collaboration, or term patterns across scientific literature, as well as research institutions and funders using such analyses to support strategic decisions. Its multiple input sources and network types make it particularly apt when the question is about relationships among publications or terms. Readers seeking a broader literature-review process should consider tools oriented to that work instead.

Pros and cons

Pros: Maps four bibliometric relationship types and term co-occurrence, with data support spanning major scholarly sources and open datasets.

Pros: Offers density and overlay views, refined counting and cleaning techniques, and high-resolution bitmap or vector exports.

Pros: Free for any purpose, with browser-based interactive sharing and cloud-sharing integrations in the stand-alone version.

Cons: Stand-alone use requires Java 8 or higher, and the other-systems download is a JAR file.

Cons: The maker’s notice about a malicious Windows executable and ongoing investigation is a material consideration for Windows users.

Cons: Its focus is bibliometric mapping, not a general literature-review workflow.

Alternatives

For a literature-review shortlist, see Literature Review Software. Choose RevMan if you want a freemium review tool with a free plan and trial across Linux, macOS, web, and Windows. Synthesis is a paid alternative with a free trial and Linux, macOS, and Windows support.

ASReview is another free option, with its LAB plan costing free; it supports API, self-hosted, web, and desktop platforms, so it may suit users seeking that broader deployment range. Bibliometrix is also free at free, as an open-source R package with a Biblioshiny web interface; consider it if that R-based format fits your work.

Rayyan has a free plan capped at three active reviews and two free reviewers, with limited mobile access; it is a fit to consider when review limits and mobile access matter. Buhos is a free alternative. Elicit offers a freemium model and a Basic plan with limited Research Agent and Research Reports usage, alongside unlimited search across more than 138 million papers, summaries, and chat with papers. EviSynth is a free, open-source option for academic use with unlimited collaborators.

Verdict

Choose VOSviewer if your priority is free, specialized mapping of bibliometric relationships and terms, with several ways to share the resulting visualizations. Its broad source support is the main reason to choose it; the Java prerequisite and Windows security notice are the main reasons to look elsewhere or use particular care.