head to head · open source
SkillSpector vs xalgorix
SkillSpector has 17,624 GitHub stars, 1,504 forks, 136 open issues and last shipped yesterday. xalgorix has 1,103 stars, 194 forks, 2 open issues and last shipped 3 days ago. SkillSpector leads on adoption by 1,498% (17,624 vs 1,103 stars). SkillSpector is written in Python under Apache-2.0; xalgorix is written in Go under Apache-2.0. SkillSpector has attracted 9% as many forks as stars, xalgorix 18%. SkillSpector was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (ai-security), 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
| SkillSpector | xalgorix | |
|---|---|---|
| GitHub stars | ★ 18K | ★ 1.1K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Python | Go |
| Last push | 2026-09-17 | 2026-09-15 |
| Forks | ⑂ 1.5K | ⑂ 194 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick SkillSpector if
- You weight community size — 18K 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 xalgorix if
- You want the xalgorix feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Go
- You evaluated both and xalgorix fits your workflow better
About SkillSpector
SkillSpector is an open source security scanner for AI agent skills that detects vulnerabilities, malicious patterns, prompt injection, data exfiltration, and supply chain risk in Claude Code, Codex CLI, Gemini CLI, and MCP skills before they are installed — built for developers who install agent skills and for security teams that vet or publish them.
read the full SkillSpector overview →
About xalgorix
Xalgorix is an open source, self hosted autonomous AI penetration testing platform for security teams, pentesters, and bug bounty hunters who want every reported finding independently re exploited as proof instead of triaged as a maybe.
read the full xalgorix overview →
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Frequently asked questions
Is SkillSpector or xalgorix more popular?
SkillSpector has 17,624 GitHub stars and xalgorix has 1,103. SkillSpector has the larger community by that measure.
Are SkillSpector and xalgorix free?
Both are open source. SkillSpector is licensed under Apache-2.0 and xalgorix under Apache-2.0. Neither carries a licence fee.
What is the difference between SkillSpector and xalgorix?
SkillSpector is written in Python and xalgorix 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, SkillSpector or xalgorix?
Choose SkillSpector if you want the larger community (17,624 stars) or its Apache-2.0 licence terms. Choose xalgorix if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.