# PuerkitoBio/gocrawl

Polite, slim and concurrent web crawler.

Repository: https://github.com/PuerkitoBio/gocrawl
Canonical: https://ross.abutalabs.com/products/gocrawl
Language: Go
License: BSD-3-Clause
License Family: permissive
Topics: crawler, robots-txt
Last push: 2021-05-19T15:15:33+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 5097, "days_push": 1932, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2052, forks 196 (observed 2026-08-28T04:06:09.604936+00:00)

## What it is
gocrawl is a polite, slim and concurrent web crawler library written in Go. It respects robots.txt rules, applies per-host crawl delays, and offers customizable hooks into the crawling logic via an Extender interface.

## Use cases
- crawl a website politely respecting robots.txt
- scrape pages from multiple hosts concurrently
- build a site indexer in Go
- extract data from web pages with per-host crawl delays
- harvest links from a domain with configurable user agent

## When to choose
- you need a Go crawler that obeys robots.txt and rate-limits per host
- you want fine-grained control over which URLs are visited via hooks
- you need concurrent crawling with goroutines

## When to avoid
- you want a simpler, more idiomatic modern Go crawler (consider fetchbot)
- you need a full-featured scraping framework with JavaScript rendering
- you need a actively developed project with recent releases

## Facets
- artifact type: library
- maturity: maintenance
- function: web-scraping, http-client, concurrency
- domain: crawlers, web-development, developer-tools
- platform: go, cross-platform
- tags: web-crawler, robots-txt, polite-crawling, goquery

## Member repositories
- PuerkitoBio/gocrawl (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:09.604936+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 2026-08-30T02:57:21.003955+00:00, confidence not recorded.
  - readme: https://github.com/PuerkitoBio/gocrawl (fetched 2026-08-28T04:06:09.604936+00:00, sha 6f97adf5d7c0)
- Data as of 2026-08-30T08:39:29.467469+00:00.