Catalog comparison
FalcoZAP (Zed Attack Proxy)
Side-by-side facts from the TestGuild Tool Matcher catalog. Empty cells mean the catalog does not list that attribute — not that the product lacks it.
Cloud Native Runtime Security - An open source security tool for detecting threats in cloud-native environments. Falco monitors system calls, container events, and Kubernetes audit logs to detect suspicious behavior and security threats in real-time.
The world's most widely used web app scanner. Free and open source DAST tool by Checkmarx. A community based GitHub Top 1000 project that anyone can contribute to.
At a glance
Primary testing surface
Falco
Security
ZAP (Zed Attack Proxy)
Security
Primary capability
Falco
Security
ZAP (Zed Attack Proxy)
Security
License and pricing
Falco
free · open source
ZAP (Zed Attack Proxy)
free · open source
Free trial
Falco
No
ZAP (Zed Attack Proxy)
No
Complexity
Falco
intermediate
ZAP (Zed Attack Proxy)
intermediate
Team fit
Falco
enterprise, large, medium, small
ZAP (Zed Attack Proxy)
enterprise, large, medium, small
Test authoring languages
Falco
C++, Go, JSON, Shell Scripts, YAML
ZAP (Zed Attack Proxy)
Java, JavaScript, Python, REST API
Supported platforms
Falco
aws eks, azure aks, cloud native environments, container orchestration platforms, containerd, cri-o, docker, google gke, kubernetes, linux, openshift, rancher
ZAP (Zed Attack Proxy)
CLI, Docker, Linux, macOS, Web, Windows
MCP server
Falco
No
ZAP (Zed Attack Proxy)
No
Key features (catalog)
Falco
Alert management, Anomaly detection, Cloud-native integration, CNCF graduated project, Compliance monitoring, Container escape detection, Container runtime security, Cross-platform support, Custom rule creation with Falco rules, eBPF-based monitoring +22 more
ZAP (Zed Attack Proxy)
Active scanning capabilities, API security testing, Authentication support, Automated security scanning, CI/CD integration, Community-driven development, Comprehensive reporting, Cross-platform support (Windows, Mac, Linux), Docker container support, Dynamic Application Security Testing (DAST) +9 more
Limitations (catalog)
Falco
Learning curve for custom rule creation, Limited to runtime security (no static analysis), Linux-only (requires Linux kernel), May generate false positives requiring tuning, No built-in remediation capabilities, Requires external alerting and response systems, Requires kernel module or eBPF probe installation, Requires root/privileged access for installation +2 more
ZAP (Zed Attack Proxy)
Limited enterprise support options, Limited to web application testing, May generate false positives requiring manual review, No built-in SAST capabilities, No mobile app security testing, Requires manual configuration for complex applications, Requires security expertise to use effectively, Steep learning curve for advanced features
| Attribute | Falco | ZAP (Zed Attack Proxy) |
|---|---|---|
| Primary testing surface | Security | Security |
| Primary capability | Security | Security |
| License and pricing | free · open source | free · open source |
| Free trial | No | No |
| Complexity | intermediate | intermediate |
| Team fit | enterprise, large, medium, small | enterprise, large, medium, small |
| Test authoring languages | C++, Go, JSON, Shell Scripts, YAML | Java, JavaScript, Python, REST API |
| Supported platforms | aws eks, azure aks, cloud native environments, container orchestration platforms, containerd, cri-o, docker, google gke, kubernetes, linux, openshift, rancher | CLI, Docker, Linux, macOS, Web, Windows |
| MCP server | No | No |
| Key features (catalog) | Alert management, Anomaly detection, Cloud-native integration, CNCF graduated project, Compliance monitoring, Container escape detection, Container runtime security, Cross-platform support, Custom rule creation with Falco rules, eBPF-based monitoring +22 more | Active scanning capabilities, API security testing, Authentication support, Automated security scanning, CI/CD integration, Community-driven development, Comprehensive reporting, Cross-platform support (Windows, Mac, Linux), Docker container support, Dynamic Application Security Testing (DAST) +9 more |
| Limitations (catalog) | Learning curve for custom rule creation, Limited to runtime security (no static analysis), Linux-only (requires Linux kernel), May generate false positives requiring tuning, No built-in remediation capabilities, Requires external alerting and response systems, Requires kernel module or eBPF probe installation, Requires root/privileged access for installation +2 more | Limited enterprise support options, Limited to web application testing, May generate false positives requiring manual review, No built-in SAST capabilities, No mobile app security testing, Requires manual configuration for complex applications, Requires security expertise to use effectively, Steep learning curve for advanced features |
How the trade-offs apply to your team
Guidance below is inferred only from catalog differences. It is not a winner pick.
Consider Falco if…
- you need coverage for aws eks, azure aks, cloud native environments, container orchestration platforms
- your team writes tests in C++, Go, JSON, Shell Scripts
- you care about Alert management and Anomaly detection
Consider ZAP (Zed Attack Proxy) if…
- you need coverage for CLI, macOS, Web, Windows
- your team writes tests in Java, JavaScript, Python, REST API
- you care about Active scanning capabilities and API security testing
Questions to verify before choosing
- Confirm current pricing and packaging on the Falco and ZAP (Zed Attack Proxy) websites.
- Trial both tools against a real slice of your application, not a demo site.
- Verify the exact browser, device, or OS matrix you must support.