Requestly vs OWASP ZAP: Which Should You Choose in 2026?
Choosing between Requestly 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.
By Toolradar Team · Last updated April 14, 2026 · Methodology
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Requestly
Build, test, and debug APIs faster with a lightweight, open-source API client and web debugger.
Best for you if:
- 0
- • You need api tools features specifically
- • Open-source API client and web debugger for building, testing, and mocking APIs.
- • Intercepts and modifies network requests, headers, and API responses in real-time.
OWASP ZAP
Open-source web application security scanner
Best for you if:
- 0
- • You need something completely free
- • You need testing & qa 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 |  Requestly |  OWASP ZAP |
|---|---|---|
Price | Free + Paid | Free |
Best For | API Tools | Testing & QA |
Rating | — | — |
| Feature | Requestly | OWASP ZAP |
|---|---|---|
| Pricing Model | Freemium | Free |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 0 | 0 |
| Categories | API ToolsDebugging | Testing & QABrowser DevTools |
How Requestly and OWASP ZAP Compare
Requestly
Build, test, and debug APIs faster with a lightweight, open-source API client and web debugger.
Free tier available
OWASP ZAP
Open-source web application security scanner
Free
Requestly is a api tools tool. OWASP ZAP is in testing & qa.
Who Should Use What?
On a budget?
OWASP ZAP is free. Requestly is freemium.
Go with: OWASP ZAP
Want the highest-rated option?
Neither has user reviews yet.
Go with: Requestly
Value user reviews?
Neither has user reviews yet.
Go with: Requestly
3 Questions to Help You Decide
What's your budget?
Requestly is freemium. OWASP ZAP is free. Go with OWASP ZAP if free matters most.
What's your use case?
Requestly is a api tools tool. OWASP ZAP is in testing & qa. Pick the category that matches your needs.
How important are ratings?
Neither has user reviews yet.
Key Takeaways
Requestly
- 0
- Free tier available
- Our pick for this comparison
OWASP ZAP
- Completely free
- Better fit for testing & qa
The Bottom Line
Requestly is our pick. That said, OWASP ZAP is free — hard to beat on price.
Frequently Asked Questions
Is Requestly or OWASP ZAP better?
Requestly is rated high in our evaluation. Requestly is freemium and OWASP ZAP is free.
What are Requestly and OWASP ZAP used for?
Requestly: Build, test, and debug APIs faster with a lightweight, open-source API client and web debugger.. OWASP ZAP: Open-source web application security scanner.
What does Requestly cost vs OWASP ZAP?
Requestly is freemium (free tier + paid plans). OWASP ZAP is completely free. Visit their websites for detailed pricing.