r-wasm/webr

The statistical language R compiled to WebAssembly via Emscripten, for use in web browsers and Node. observed · 2026-08-28

github.com/r-wasm/webr · homepage · TypeScript · NOASSERTION (other) observed · 2026-08-28

Health v2 · maintenance only

89/100

Activity 89
Release rhythm 84
Longevity 100

Flags: no_license

How is this computed?

round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-02. Adoption (stars, forks) is never an input.

gap_med: 25
age_days: 1687
days_rel: 106
days_push: 71
n_releases_24m: 14

Full methodology

Adoption not part of the score

1088 stars · 97 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

WebR is the R statistical programming language compiled to WebAssembly via Emscripten, allowing R code to run directly in web browsers and Node.js without a server. It includes a JavaScript API, a web-based REPL/IDE, and a CDN-hosted repository of R packages recompiled for WebAssembly.

Use cases

run R code in the browser without an R server
build interactive statistics tutorials or teaching tools that run client-side
embed R computation in a web app or dashboard
create a browser-based R REPL or playground
execute R scripts in Node.js via WebAssembly
let users fit models like lm() directly on a webpage

When to choose

you want R execution fully client-side with no backend
you're building educational or interactive statistical content for the web
you need a sandboxed R environment in Node or the browser

When to avoid

you need heavy R packages or large datasets that exceed browser WebAssembly memory limits
you require full CRAN compatibility or native performance
you need a stable, frozen API - webR is under active development and its API may change

Facets

library · maturity active

interpreter programming-language wasm sdk programming-languages data-science web-development developer-tools browser wasm r-language emscripten webassembly repl statistics client-side-computation nodejs web-server

5 sources

readme: https://github.com/r-wasm/webr · fetched 2026-08-28 · 5e009727c038
homepage: https://docs.r-wasm.org/webr/latest/ · fetched 2026-08-29 · 509c6072d7d9
site_page: https://docs.r-wasm.org/webr/latest/api/js/interfaces/WebRChan.InstallPackagesOptions.html · fetched 2026-08-29 · f45e519decdc
site_page: https://docs.r-wasm.org/webr/latest/packages.html · fetched 2026-08-29 · ddf0a38d78ea
registry_npm: https://registry.npmjs.org/webr · fetched 2026-08-29 · 935971ed1f5b

Member repositories

Repository	Role	Health v2
r-wasm/webr	main	89

For agents

markdown · JSON · MCP: product_card(name="r-wasm/webr")

Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem