Grype vs Kustomize: Which Should You Choose in 2026?
Choosing between Grype and Kustomize comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Grype
Vulnerability scanner for container images
Best for you if:
- • You need vulnerability scanning features specifically
- • Grype is an open-source vulnerability scanner for container images and filesystems
- • It scans for known vulnerabilities using multiple databases with fast results
Kustomize
Kubernetes native configuration management
Best for you if:
- • You need infrastructure as code features specifically
- • Kustomize is a Kubernetes configuration management tool for customizing deployments
- • It patches and overlays YAML manifests without templating languages
| At a Glance |  Grype |  Kustomize |
|---|---|---|
Price | Free | Free |
Best For | Vulnerability Scanning | Infrastructure as Code |
Rating | 84/100 | 84/100 |
| Feature | Grype | Kustomize |
|---|---|---|
| Pricing Model | Free | Free |
| Editorial Score | 84 | 84 |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 0 | 0 |
| Categories | Vulnerability ScanningCI/CD | Infrastructure as CodeCI/CD |
Understanding the Differences
Both Grype and Kustomize solve similar problems, but they approach them differently.Grype positions itself as "vulnerability scanner for container images" while Kustomizefocuses on "kubernetes native configuration management". These differences matter depending on what you're trying to accomplish.
When to Choose Grype
Grype makes sense if you're looking for a completely free solution.
When to Choose Kustomize
Kustomize is worth considering if you need a free tool.
Who Should Use What?
Bootstrapped or small team?
When every dollar counts, Grype lets you get started without pulling out your credit card.
We'd pick: Grype
Growing fast?
Your team doubled last quarter and you need tools that won't break when you add 50 more people. Kustomize is built for teams that are leveling up.
We'd pick: Kustomize
Enterprise with complex needs?
You need SSO, compliance certifications, and a support team that picks up the phone. Both have enterprise tiers—compare their security features.
We'd pick: Grype
Still not sure? Answer these 3 questions
How much can you spend?
Nothing at all? Grype is completely free.
Do you care what other users think?
Both have similar review counts. Read a few before you commit.
Expert opinion or crowd wisdom?
Our team rated Grype higher (84/100). But the community has upvoted Kustomize more (0 votes). Pick your source of truth.
Key Takeaways
What Grype Does Better
- Our recommendation for most use cases
Consider Kustomize If
- You need a completely free solution
- Its specific features better match your workflow
- You prefer its interface or design approach
The Bottom Line
If we had to pick one, we'd go with Grype (84/100). But the honest answer is that "better" depends on your situation. Grype scores higher in our analysis, but Kustomize might be the right choice if its specific strengths align with what you need most. Take advantage of free trials to test both before committing.
Frequently Asked Questions
Is Grype or Kustomize better?
Based on our analysis, Grype scores higher with 84/100. Grype isfree while Kustomize is free. The best choice depends on your specific needs and budget. We recommend testing both with free trials if available.
Can I switch from Grype to Kustomize easily?
Migration difficulty varies. Check if both tools support data export/import in compatible formats. Some tools offer migration assistance or have integration partners who can help with the transition.
Do Grype and Kustomize offer free trials?
Most software in this category offers free trials or free tiers. Grype is completely free.Kustomize is completely free. Visit their websites for current trial offers.