# Open-source alternatives to Snyk

> We track 3 open-source alternatives to Snyk, but none currently has confirmed commercial use, local running and no paid services together. None of the 3 projects we track covers all 3 Snyk jobs, so most people combine two or more.

Snyk: Paid hosted developer security platform that scans your source code (Snyk Code), open-source dependencies, infrastructure-as-code and containers, with IDE, CLI and source-control integrations. Pricing: Free with 100 Snyk Code tests/month; Team from $25/month for up to 10 developers with 1,000 Code tests/month; Enterprise on prepaid credits, Snyk Code at 1 credit ($1) per active contributor per day (checked 2026-10-23). Facts checked 2026-10-26.

## Projects

| Project | Use it instead? | Jobs | Runs locally | Commercial use | Paid services | Hardware |
|---|---|---|---|---|---|---|
| [Trail of Bits Skills](https://repoquarry.dev/projects/trailofbits-skills) | Personal use: Yes. Business: Partly (Commercial use with conditions: Yes, with attribution, and adapted versions must stay CC-BY-SA). | agent-skills, code-scan, dependency-scan | Yes, plugins installed into your local Claude Code or Codex | Yes, with attribution, and adapted versions must stay CC-BY-SA | Needs Claude Code, Codex or a ChatGPT workspace, which usually means a paid plan or API key | No hardware needs of its own; runs wherever the host agent runs; some plugins call external tools such as CodeQL, Semgrep or apktool |
| [Cloudflare Security Audit Skill](https://repoquarry.dev/projects/security-audit-skill) | Personal use: Yes. Business: Yes. | agent-skills, code-scan | Yes, a skill installed into your local coding agent | Yes, MIT allows commercial use | Needs a coding agent with a tool-use model, which may need a paid plan or API key | No hardware needs of its own; Markdown skill files run wherever the host agent runs, plus Node.js for the validators and a sandbox for running target code |
| [Defending Code Reference Harness](https://repoquarry.dev/projects/defending-code-reference-harness) | Personal use: Partly (Needs something paid: Claude (Claude Code or API)). Business: Partly. | agent-skills, code-scan | Yes, Claude Code skills in a local clone; the autonomous pipeline runs in local Docker containers | Yes, Apache-2.0 | Needs access to Claude through Claude Code or the Claude API (direct, Bedrock, Vertex or Azure) | No GPU needed, Claude runs via the API; the skills have no hardware needs of their own; pipeline agent containers get a 4 GB Docker memory cap by default (memory\_limit in the target config); no host CPU, RAM or disk minimum documented |

## Common questions

### Is there a free, open-source alternative to Snyk?

Yes. Trail of Bits Skills and Cloudflare Security Audit Skill are free to download and run on your own computer without paid API keys. Each covers only part of what Snyk does, so check which job you need.

### Can I do find vulnerabilities in your own source code (SAST) locally without a Snyk subscription?

Yes, with Trail of Bits Skills (CC-BY-SA-4.0), Defending Code Reference Harness (Apache-2.0) and Cloudflare Security Audit Skill (MIT). Check the hardware notes and licence conditions on each page before you start.

### Can I do find vulnerable open-source dependencies (SCA) locally without a Snyk subscription?

Yes, with Trail of Bits Skills (CC-BY-SA-4.0). Check the hardware notes and licence conditions on each page before you start.

### Which Snyk alternatives run on Windows, macOS or Linux?

macOS: Trail of Bits Skills. Linux: Defending Code Reference Harness and Trail of Bits Skills. The rest are web apps or servers, or their docs don't say which systems they support.

### Which Snyk alternatives can I use commercially?

Confirmed: Defending Code Reference Harness and Cloudflare Security Audit Skill. With conditions: Trail of Bits Skills. This is not legal advice; read each licence.

### Does any open-source project replace all of Snyk?

Not as of 2026-10-26. Find vulnerabilities in your own source code (SAST), find vulnerable open-source dependencies (SCA) and scan infrastructure-as-code and containers are covered by different projects.

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Source: RepoQuarry (https://repoquarry.dev/alternatives/snyk). Data licence: CC BY 4.0. Quotes are from project documentation and belong to their authors.