crowdsec

crowdsec

Alternative to Cloudflare

A collaborative security engine for detecting and blocking malicious traffic

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MIT
last commit 2026-03-06
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Open-source IDS/IPS, WAF and bot detection for Linux, Windows, Docker and Kubernetes, with a crowdsourced blocklist of malicious IPs.

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Free alternative to Cloudflare

crowdsec is a free, open-source alternative to Cloudflare. Here's why:

  • 🚫 Malicious traffic detection
  • πŸ›‘οΈ Automated IP blocking
  • 🀝 Collaborative threat intelligence
  • πŸš€ Real-time attack prevention
  • πŸ’» Flexible platform support
See all open-source alternatives to Cloudflare
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slug: crowdsec