Web Scraping API 2026：6个开源方案对比

要从几十个网站稳定提取数据，但每个抓取服务都按页收费。开源爬虫已经很强了。

Web Scraping APIs: Build Your Own or Rent One

In 2026 the open-source scraping stack is mature enough that most teams only need to rent a service for the hardest 20% of sites. Here are the six open-source options that matter, with real GitHub star counts from August 2026.

The Six Tools

1. Crawlee (25,143 stars, Apache-2.0). The most popular Node.js scraping library. It handles the boring parts - proxy rotation, retries, request queues, and headless browser orchestration via Playwright or Puppeteer - and exports clean data for AI pipelines.

2. Firecrawl (158,989 stars, AGPL-3.0). The LLM-first option: URL in, markdown out. Best when your goal is content for RAG rather than structured records.

3. Scrapy (the classic). The battle-tested Python framework. Steeper learning curve but unmatched for large, well-structured crawls.

4. browserless (13,542 stars). A self-hosted headless browser service - essentially your own ScrapingBee. Run Chrome in Docker, drive it via API.

5. Playwright / Puppeteer. Not scrapers per se but the browser automation layer under most modern tools. If a page is JavaScript-rendered, one of these is underneath.

6. Colly (Go). The Go standard for scraping - single binary, fast, great for microservices.

How to Choose

Pick by output format: need clean content for LLMs? Firecrawl. Need structured records at scale with queueing? Crawlee or Scrapy. Need a self-hosted browser service for many small jobs? browserless in Docker. Language matters too - Crawlee if you live in TypeScript, Scrapy or Colly if Python or Go.

The Common Architecture

A production scraper in 2026: Crawlee (or Scrapy) for scheduling and retries, Playwright for JS rendering, a proxy pool for IP rotation, and a queue (Redis) for millions of URLs. The output lands in a vector store or database, ready for RAG or analytics.

FAQ

Are open-source scrapers really free? The software is; you pay for proxies, compute, and your time.

Do I need a proxy for large crawls? Yes - without IP rotation, sites will block you quickly.

Is scraping legal? It depends on jurisdiction and site terms; public data scraping is generally legal in the US but gray elsewhere.

How do I avoid breaking sites? Respect robots.txt, set polite rate limits, and identify your bot clearly.