head to head · open source
Anthropic-Cybersecurity-Skills vs Nettacker
Anthropic-Cybersecurity-Skills has 33,000 GitHub stars, 3,991 forks, 48 open issues and last shipped 20 days ago. Nettacker has 5,596 stars, 1,181 forks, 249 open issues and last shipped 2 days ago. Anthropic-Cybersecurity-Skills leads on adoption by 490% (33,000 vs 5,596 stars). Anthropic-Cybersecurity-Skills is written in Python under Apache-2.0; Nettacker is written in Python under Apache-2.0. Anthropic-Cybersecurity-Skills has attracted 12% as many forks as stars, Nettacker 21%. Nettacker was the more recently maintained of the two, and both are self-hostable with no licence fee.
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 | Nettacker | |
|---|---|---|
| GitHub stars | ★ 33K | ★ 5.6K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Python | Python |
| Last push | 2026-08-31 | 2026-09-18 |
| Forks | ⑂ 4.0K | ⑂ 1.2K |
| 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 Nettacker if
- You want the Nettacker feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Python
- You evaluated both and Nettacker 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 Nettacker
OWASP Nettacker is an open source, Python based automated penetration testing and information gathering framework for cyber security professionals and ethical hackers who need to run reconnaissance, vulnerability assessment, and network security audits efficiently.
read the full Nettacker overview →
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Frequently asked questions
Is Anthropic-Cybersecurity-Skills or Nettacker more popular?
Anthropic-Cybersecurity-Skills has 33,000 GitHub stars and Nettacker has 5,596. Anthropic-Cybersecurity-Skills has the larger community by that measure.
Are Anthropic-Cybersecurity-Skills and Nettacker free?
Both are open source. Anthropic-Cybersecurity-Skills is licensed under Apache-2.0 and Nettacker under Apache-2.0. Neither carries a licence fee.
What is the difference between Anthropic-Cybersecurity-Skills and Nettacker?
Anthropic-Cybersecurity-Skills is written in Python and Nettacker in Python. 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 Nettacker?
Choose Anthropic-Cybersecurity-Skills if you want the larger community (33,000 stars) or its Apache-2.0 licence terms. Choose Nettacker if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.