# rchipka/node-osmosis

Web scraper for NodeJS

Repository: https://github.com/rchipka/node-osmosis
Canonical: https://ross.abutalabs.com/products/node-osmosis
Language: JavaScript
License Family: other
Last push: 2023-12-13T04:18:37+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 4226, "days_push": 994, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 4107, forks 258 (observed 2026-08-28T04:08:35.672057+00:00)

## What it is
Osmosis is an HTML/XML parser and web scraper library for Node.js built on native libxml C bindings. It offers a chainable, promise-like interface for crawling pages, following links, paginating, and extracting structured data with CSS and XPath selectors.

## Use cases
- scrape product listings from e-commerce sites
- extract structured data from html pages
- crawl paginated search results
- parse html with css and xpath selectors
- submit login forms and scrape behind auth
- scrape through rotating proxies with retries

## When to choose
- you need fast, low-memory scraping in Node.js without jsdom or jQuery
- you want a fluent chainable API for follow/paginate/set extraction flows
- you need proxy rotation, cookies, and form login built into the scraper

## When to avoid
- you need a modern, actively maintained scraper with current ecosystem support
- you are scraping JavaScript-heavy SPAs that require a headless browser
- you need TypeScript types or a promise/async-await native API

## Facets
- artifact type: library
- maturity: maintenance
- function: web-scraping, parser, http-client
- domain: web-development, crawlers
- platform: -
- tags: html-parsing, xpath, css-selectors, libxml, proxy-support, cookies, data-engineering, nodejs

## Member repositories
- rchipka/node-osmosis (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:35.672057+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 2026-08-29T18:23:13.283844+00:00, confidence not recorded.
  - readme: https://github.com/rchipka/node-osmosis (fetched 2026-08-28T04:08:35.672057+00:00, sha eb17be635bd5)
- Data as of 2026-08-30T08:39:29.467469+00:00.