# rhysd/vim.wasm

Vim editor ported to WebAssembly

Repository: https://github.com/rhysd/vim.wasm
Canonical: https://ross.abutalabs.com/products/vimwasm
Homepage: http://rhysd.github.io/vim.wasm
Language: Vim Script
License Family: other
Topics: vim, wasm, webassembly, editor
Last push: 2026-02-25T16:49:20+00:00

## Health v2 (maintenance only)
Score: 54/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 69, release rhythm 8, longevity 100
- inputs: {"age_days": 2985, "days_push": 189, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 5644, forks 149 (observed 2026-08-28T04:09:26.900887+00:00)

## What it is
An experimental port of the Vim text editor compiled to WebAssembly using Emscripten, running in the browser via a Web Worker with SharedArrayBuffer. It supports most Vim features including syntax highlighting, Vim script, and persistent config storage in Indexed DB.

## Use cases
- run vim in the browser
- try vim without installing it
- edit files in a web browser with vim keybindings
- demo vim to others via a link
- use vimscript in the browser
- practice vim with vimtutor online

## When to choose
- you want to use or demo real Vim inside a desktop browser
- you need a zero-install Vim environment with persistent ~/.vim storage
- you're experimenting with WebAssembly ports of C applications

## When to avoid
- you need a stable, bug-free editor for real work - the project is explicitly experimental and buggy
- you're on mobile or a browser without SharedArrayBuffer support
- you need to edit files on a local filesystem or run external tools

## Facets
- artifact type: application
- maturity: experimental
- function: editor, wasm
- domain: text-editors, web-development, developer-tools
- platform: browser, wasm
- tags: vim, webassembly, emscripten, browser-editor, vim-script

## Member repositories
- rhysd/vim.wasm (main) score 54

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:26.900887+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:55:17.619257+00:00, confidence not recorded.
  - readme: https://github.com/rhysd/vim.wasm (fetched 2026-08-28T04:09:26.900887+00:00, sha 5e15e1485eee)
  - homepage: http://rhysd.github.io/vim.wasm (fetched 2026-08-29T08:49:44.705022+00:00, sha 1c18193d3493)
- Data as of 2026-08-30T08:39:29.467469+00:00.