Best Open-source Web Scraping & Crawling tools

ChangeDetection.io

Real-time website change monitoring with instant multi-channel alerts

Scrapy

Fast, high-level Python framework for web crawling and scraping

Firecrawl

Turn any website into clean, LLM‑ready data instantly

Crawl4AI

Turn the web into clean, LLM-ready Markdown instantly

Apache Nutch

Scalable, extensible Java web crawler for large‑scale data collection

Crawlee

Build fast, human-like web scrapers with a single library

Maxun

Train a web‑scraping robot in minutes, no code required

Colly

Fast, elegant web scraping framework for Go developers

Katana

Fast, configurable web crawler with headless and JavaScript support

Scrapling

Adaptive web scraping that survives site changes effortlessly

AnyCrawl

High-performance web, site, and SERP crawler with AI extraction

LLM Scraper

Extract structured data from any webpage using LLMs

AutoScraper

Automatic, fast, lightweight web scraper that learns from examples

ScrapeGraphAI

LLM‑powered web scraping pipelines in just five lines of code

WebMagic

Scalable Java crawler framework with flexible API and annotations