head to head · open source
Anthropic-Cybersecurity-Skills vs crowdsec
Anthropic-Cybersecurity-Skills has 35,804 GitHub stars, 4,364 forks, 48 open issues and last shipped 2 months ago. crowdsec has 15,510 stars, 757 forks, 296 open issues and last shipped 4 days ago. Anthropic-Cybersecurity-Skills leads on adoption by 131% (35,804 vs 15,510 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 | ★ 36K | ★ 16K |
| License | Apache-2.0 | MIT |
| Written in | Python | Go |
| Last push | 2026-08-31 | 2026-11-06 |
| Forks | ⑂ 4.4K | ⑂ 757 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Anthropic-Cybersecurity-Skills if
- You weight community size — 36K 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 The largest open source cybersecurity skills library for AI agents 818 production grade cybersecurity skills · 34 security domains · 6 framework mappings · 26+ AI platforms Get Started · What's Inside · Frameworks · Platforms · Contributing ⚠️ Community Project — This is an independent, community created project. Not affiliated with Anthropic PBC. 🔐 Authorized & lawful use only. This library includes offensive and dual use techniques (e.g. red team C2, phishing simulation, exploitation) intended for authorized penetration testing, security research, defense, and education . Only…
read the full Anthropic-Cybersecurity-Skills overview →
About crowdsec
CrowdSec: open source IDS/IPS, WAF and bot detection CrowdSec is an open source and participative security solution offering crowdsourced server detection and protection against malicious IPs. Detect and block with our Security Engine, contribute to the network, and enjoy our real time community blocklist. Features & Advantages Versatile Security Engine CrowdSec Security Engine is an all in one IDS/IPS and WAF. It detects bad behaviors by analyzing log sources and HTTP requests, and allows active remediation thanks to the Remediation Components. Detection rules are available on our hub under MIT license…
read the full crowdsec overview →
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Frequently asked questions
Is Anthropic-Cybersecurity-Skills or crowdsec more popular?
Anthropic-Cybersecurity-Skills has 35,804 GitHub stars and crowdsec has 15,510. 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 (35,804 stars) or its Apache-2.0 licence terms. Choose crowdsec if its feature set, stack or MIT licence fits better. Both are self-hostable.