Open Source Snyk Alternatives in 2026: A Free Tool for Each Snyk Product

Why do teams look for an open source Snyk alternative?

Teams look for an open source Snyk alternative for three reasons: the limits of the free plan, the price of growing past it, and where the code goes. Each one is written on Snyk's own pages.

• The free plan has monthly limits. On 13 November 2026 Snyk's Free plan covered 5 projects, with 100 Snyk Code tests, 200 Snyk Open Source tests, 300 Snyk IaC tests and 100 Snyk Container tests a month. A team that scans every pull request reaches the Code limit quickly.
• The paid plans grow with the team. Snyk's Team plan is described as "for development teams of up to 10 developers". Above that, the Enterprise plan is credit-based and quoted on request. Snyk counts a developer as anyone who has made a commit to a private repository it monitors in the last 90 days, so every contributor adds to the bill.
• Every test goes through Snyk. The Snyk CLI is open source under Apache-2.0, but its documentation states that "you need to authenticate with your Snyk account" before a test. To keep private repositories behind a firewall, Snyk offers Broker, a proxy whose server side "runs on the Snyk SaaS backend", on Enterprise plans. Regional hosting, including the EU region in Frankfurt, is "available only for Enterprise plans", and the Snyk Code Local Engine is deprecated.

There is also the agentic layer. Snyk's Evo capabilities, its AI pentesting and coding agent security, are "not available via the Free or Team plan" according to its plans page.

None of this makes Snyk a poor product. It makes it a hosted product, priced by contributor, and a team that wants to run its scanners on its own servers has to look elsewhere.

What does Snyk do, product by product?

Snyk sells six scanning products under one platform: Snyk Code for static analysis of your code, Snyk Open Source for dependencies, Snyk Container for images, Snyk IaC for infrastructure files, Snyk Secrets for hard-coded credentials, and Snyk API & Web for running applications. On top sit Snyk Agent Fix, which proposes fixes, and Evo, its agentic products.

Which open source tool replaces each Snyk product?

Each Snyk scanner has at least one maintained open source equivalent in 2026. Here is each one, with what it does well and where it falls short.

Snyk Code: Opengrep

Opengrep is a fork of Semgrep under the LGPL-2.1 licence, created when Semgrep moved features behind a commercial licence. Its README says it supports more than 30 languages and that existing Semgrep rules "work unchanged", so the community rule sets and your own rules run on day one. Its stable releases track taint inside a file; cross-file tracking exists only in an alpha of Opengrep 2.0 marked for testing. Snyk Code follows data across files, which catches injections whose source and sink live in different modules. If you leave Snyk Code, test your critical flows across files yourself, or pair Opengrep with a second engine for your main languages. Our Semgrep alternatives guide compares the engines, and the SAST guide lists the best tool per language.

Snyk Open Source and Snyk Container: Trivy, OSV-Scanner, Grype

Trivy, Apache-2.0, scans dependencies, container images, infrastructure as code, secrets and licences with one binary. OSV-Scanner, Google's front end to the OSV database, and Grype, from Anchore, focus on packages. In our test of open source SCA tools on 5 November 2026, run on one repository with outdated npm, Python, Maven and Go dependencies, OSV-Scanner found all 109 distinct vulnerabilities, Trivy 105 and Grype 104. The gaps came from dependencies that the manifests do not declare.

Two things Snyk adds that you rebuild yourself: the curation of its own vulnerability database, and the pull requests that upgrade a dependency. For the second, Dependabot or Renovate open those upgrade pull requests for free.

Snyk IaC: Trivy and Checkov

Trivy checks "popular Infrastructure as Code files, such as: Docker, Kubernetes, Terraform, CloudFormation, and more", with Azure ARM templates and Helm charts on its coverage list. Checkov, Apache-2.0 and maintained by Prisma Cloud, describes itself as a static code analysis tool for infrastructure as code, and it also scans images and open source packages. Trivy is the simpler choice if it already scans your images, since one binary then covers both.

Snyk Secrets: Gitleaks, Betterleaks, TruffleHog

Gitleaks, MIT, finds passwords, API keys and tokens in files and git history; since May 2026 it calls itself feature complete and ships security patches only, and its original author now works on Betterleaks. TruffleHog, AGPL-3.0, can also log in with a secret it finds to confirm whether it is live. In our test of open source secret scanners on 29 October 2026, Betterleaks found 12 of 12 planted secrets, Gitleaks 10 and TruffleHog 9.

Snyk API & Web: ZAP

Snyk API & Web tests running applications. On the open source side, dynamic testing is ZAP's job. It works on a deployed app and not on your repository, so it sits outside the static stack of this guide.

CI/CD workflows: zizmor

A GitHub Actions workflow is code that runs with your secrets. zizmor, MIT, is a static analyser for those workflows, with audits such as template-injection, unpinned-uses, dangerous-triggers and excessive-permissions. It catches the paths an attacker uses to turn a pull request into a run with your tokens.

What do you lose when you leave Snyk?

You lose the platform, not the scanners. Five open source tools give you five outputs, five severity scales and five lists that overlap: the same vulnerable package shows up in Trivy and OSV-Scanner, the same leaked key in Gitleaks and TruffleHog. Snyk keeps them in one place, applies your policies and produces reports.

Without that layer, three jobs land on your team:

1. Deduplication and triage. Someone has to merge findings across tools and decide what is real, every week.
2. Policy. Which severity fails the build, which exception is allowed, who approved it and until when.
3. Evidence. A history of what was found, when, and when it was fixed, for a SOC 2 or ISO 27001 audit.

DefectDojo, BSD-3-Clause, describes itself as a "DevSecOps, ASPM (application security posture management), and vulnerability management tool": it imports findings from many scanners and tracks them. Our guide to open source vulnerability management covers it with Dependency-Track and what an auditor checks.

How do you migrate from Snyk to open source tools?

Migrate one product at a time, with both running side by side, so you see what each tool finds before you switch Snyk off.

1. List what you use. Export your Snyk projects and open issues, and note which products and integrations you rely on: pull request checks, IDE plugins, the reports your auditor reads.
2. Run the open source tool next to Snyk for two weeks. Same repositories, same branches. Compare findings, not counts: what Snyk saw that the new tool missed, and the reverse.
3. Move the checks into CI. Export each tool's results in SARIF where it can, JSON where it cannot. Fail the build on critical and high findings that have a fix, and send everything else to your register.
4. Set the policy, then switch off. Write down severities, exceptions and deadlines, carry over the open issues, and cancel the Snyk product once its replacement has run clean for a full cycle.

For hosted platforms compared side by side, see our comparison of AI code security tools, and our CybeDefend vs Snyk page for the criterion-by-criterion view.

Where does CybeDefend fit?

CybeDefend Open Source is the open source Snyk alternative, and it is launching soon. It is built for the gap this guide describes. One command in your coding agent, /cybedefend, runs a full audit in two layers.

First the AppSec scanners, open source, with Opengrep, Trivy, Gitleaks and zizmor among them, for code, dependencies, secrets, infrastructure as code, CI/CD and containers. Keep the ones you want and add your own: anything that writes SARIF lands in the same queue. Then the AI scanner, run by your coding agent. Scanners match patterns. The AI scanner reads what your code is meant to do and finds where it breaks, in business logic, in access rights and in the flaws that only show when the code runs, and it proves each flaw with an exploit written as a test. No extra model and no API key: the AI is the coding agent you already run.

Under both layers sits our whole platform, an agentic ASPM: every finding in one deduplicated queue, a policy that blocks the merge on a critical finding, and reports for your auditor. It runs on your servers, free, with no limit on projects or users and SSO included. To run it on your own code when it opens, join the CybeDefend Open Source waitlist.

Frequently asked questions

Is there a free open source alternative to Snyk?

Yes, one tool per Snyk product: Opengrep for Snyk Code, Trivy or OSV-Scanner for Snyk Open Source, Trivy or Grype for Snyk Container, Trivy or Checkov for Snyk IaC, and Gitleaks, Betterleaks or TruffleHog for Snyk Secrets. All are free and run on your own machines. What you add yourself is one place to merge and track what they find.

Is Snyk open source?

Partly. The Snyk CLI is published under Apache-2.0, and Snyk Broker is an open source proxy, but the CLI needs a Snyk account to run a test, and the analysis platform is Snyk's hosted service. Since July 2024 the CLI repository is closed to outside contributions.

Is Trivy a good alternative to Snyk?

For dependencies, container images, infrastructure as code and secrets, yes: one Apache-2.0 binary covers what Snyk Open Source, Snyk Container and Snyk IaC do. Trivy does not analyse your own source code, so pair it with a SAST tool such as Opengrep to replace Snyk Code.

What is the open source alternative to Snyk Code?

Opengrep, the LGPL-2.1 fork of Semgrep, which runs Semgrep rules unchanged on more than 30 languages. Its taint analysis works inside a file, where Snyk Code follows data across files, so check your critical flows that cross modules.

Can you self-host Snyk?

Not the analysis itself on a standard plan. Snyk Broker keeps your repositories on your network but connects to Snyk's SaaS, on Enterprise plans; a single-tenant Snyk Private Cloud is available on request. An open source stack runs entirely on your servers.

Is CybeDefend open source?

Its open source edition, CybeDefend Open Source, is launching soon: our whole platform, an agentic ASPM, free to run on your own servers. The command /cybedefend chains the open source AppSec scanners and an AI scanner run by your coding agent, and keeps every finding in one queue. Join the CybeDefend Open Source waitlist.