Step CI vs OWASP ZAP: Which Should You Choose in 2026?
Choosing between Step CI and OWASP ZAP 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:
Step CI
Open-source API testing framework for security, performance, and load testing.
Best for you if:
- • You need api tools features specifically
- • Open-source API testing framework for various API types.
- • Supports security, performance, and load testing.
OWASP ZAP
Open-source web application security scanner
Best for you if:
- • You want the higher-rated option (8.5/10 vs 0.0/10)
- • You need something completely free
- • You need vulnerability scanning features specifically
- • OWASP ZAP is a free security testing tool for finding web application vulnerabilities
- • It scans for security issues with automated and manual testing capabilities
| At a Glance |  OWASP ZAP | |
|---|---|---|
Price | Free + Paid | Free |
Best For | API Tools | Vulnerability Scanning |
Rating | —/100 | 85/100 |
| Feature | Step CI | OWASP ZAP |
|---|---|---|
| Pricing Model | Freemium | Free |
| Editorial Score | — | 85 |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 0 | 0 |
| Categories | API ToolsTesting & QA | Vulnerability ScanningTesting & QA |
Understanding the Differences
Both Step CI and OWASP ZAP solve similar problems, but they approach them differently.Step CI positions itself as "open-source api testing framework for security, performance, and load testing." while OWASP ZAPfocuses on "open-source web application security scanner". These differences matter depending on what you're trying to accomplish.
When to Choose Step CI
Step CI makes sense if you're looking for a budget-friendly option with a free tier solution.
When to Choose OWASP ZAP
OWASP ZAP is worth considering if you need a free tool. Scoring 85/100, it edges ahead in our evaluation.
Who Should Use What?
Bootstrapped or small team?
When every dollar counts, Step CI lets you get started without pulling out your credit card.
We'd pick: Step CI
Growing fast?
Your team doubled last quarter and you need tools that won't break when you add 50 more people. OWASP ZAP is built for teams that are leveling up.
We'd pick: OWASP ZAP
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: OWASP ZAP
Still not sure? Answer these 3 questions
How much can you spend?
Zero budget? OWASP ZAP won't cost you anything.
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 OWASP ZAP higher (85/100). But the community has upvoted OWASP ZAP more (0 votes). Pick your source of truth.
Key Takeaways
What OWASP ZAP Does Better
- Higher overall score (85/100)
- Our recommendation for most use cases
Consider Step CI If
- You want to start free and scale later
- 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 OWASP ZAP (85/100). But the honest answer is that "better" depends on your situation. OWASP ZAP scores higher in our analysis, but Step CI 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 Step CI or OWASP ZAP better?
Based on our analysis, OWASP ZAP scores higher with 85/100. Step CI isfreemium while OWASP ZAP 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 Step CI to OWASP ZAP 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 Step CI and OWASP ZAP offer free trials?
Most software in this category offers free trials or free tiers. Step CI is freemium with a free tier.OWASP ZAP is completely free. Visit their websites for current trial offers.