head to head · open source
Anthropic-Cybersecurity-Skills vs crowdsec
Anthropic-Cybersecurity-Skills has 33,341 GitHub stars, 4,050 forks, 48 open issues and last shipped 25 days ago. crowdsec has 14,956 stars, 719 forks, 296 open issues and last shipped yesterday. Anthropic-Cybersecurity-Skills leads on adoption by 123% (33,341 vs 14,956 stars). Anthropic-Cybersecurity-Skills is written in Python under Apache-2.0; crowdsec is written in Go under MIT. Anthropic-Cybersecurity-Skills has attracted 12% as many forks as stars, crowdsec 5%. crowdsec was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (cybersecurity), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Anthropic-Cybersecurity-Skills | crowdsec | |
|---|---|---|
| GitHub stars | ★ 33K | ★ 15K |
| License | Apache-2.0 | MIT |
| Written in | Python | Go |
| Last push | 2026-08-31 | 2026-09-24 |
| Forks | ⑂ 4.0K | ⑂ 719 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Anthropic-Cybersecurity-Skills if
- You weight community size — 33K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick crowdsec if
- You want the crowdsec feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Go
- You evaluated both and crowdsec fits your workflow better
About Anthropic-Cybersecurity-Skills
Anthropic Cybersecurity Skills is an Apache 2.0 Python library of 817 structured cybersecurity skills that gives AI agents the working knowledge of a senior security analyst, aimed at security teams, DevSecOps engineers, and red or blue teams that already run agents such as Claude Code, GitHub Copilot, Codex CLI, Cursor, or Gemini CLI.
read the full Anthropic-Cybersecurity-Skills overview →
About crowdsec
CrowdSec is an open source, MIT licensed intrusion detection and prevention system, WAF and bot detection engine that analyses logs and HTTP requests and blocks malicious IPs at the firewall, reverse proxy or CDN, built for Linux, Windows, Docker and Kubernetes operators who want community sourced threat intelligence sitting behind their own infrastructure.
read the full crowdsec overview →
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Frequently asked questions
Is Anthropic-Cybersecurity-Skills or crowdsec more popular?
Anthropic-Cybersecurity-Skills has 33,341 GitHub stars and crowdsec has 14,956. Anthropic-Cybersecurity-Skills has the larger community by that measure.
Are Anthropic-Cybersecurity-Skills and crowdsec free?
Both are open source. Anthropic-Cybersecurity-Skills is licensed under Apache-2.0 and crowdsec under MIT. Neither carries a licence fee.
What is the difference between Anthropic-Cybersecurity-Skills and crowdsec?
Anthropic-Cybersecurity-Skills is written in Python and crowdsec in Go. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Anthropic-Cybersecurity-Skills or crowdsec?
Choose Anthropic-Cybersecurity-Skills if you want the larger community (33,341 stars) or its Apache-2.0 licence terms. Choose crowdsec if its feature set, stack or MIT licence fits better. Both are self-hostable.