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Whispers is a free static application security testing tool. Perforce Klocwork is a commercial static application security testing tool by Perforce Software. Compare features, ratings, integrations, and community reviews side by side to find the best static application security testing fit for your security stack.
Based on our analysis of NIST CSF 2.0 coverage, core features, integrations, company size fit, here is our conclusion:
Developers and AppSec teams running lean, credential-focused scanning will find Whispers useful for the specific job it does: parsing code repositories to surface hardcoded secrets and dangerous function calls before they reach production. The free pricing and 492 GitHub stars indicate real adoption among open-source and startup teams who need friction-free scanning without vendor lock-in. Skip this if you need integration with your existing SAST platform or remediation workflows; Whispers is a point tool that finds problems but assumes your team owns the handoff to fix them.
Development teams shipping C, C++, and Java at scale will get the most from Perforce Klocwork because its differential analysis mode catches regressions in changed code without slowing down the build pipeline. It supports MISRA C/C++ and AUTOSAR C++ 14 out of the box, which matters if you're embedded systems or automotive; most SAST tools treat safety standards as an afterthought. Skip this if your codebase is predominantly Python or JavaScript and you need deep data flow analysis for third-party dependencies, where Klocwork's strength in compiled languages becomes a liability.
A static code analysis tool for parsing common data formats to detect hardcoded credentials and dangerous functions.
Static code analyzer & SAST tool for C, C++, Java, JavaScript, Python, Kotlin
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Common questions about comparing Whispers vs Perforce Klocwork for your static application security testing needs.
Whispers: A static code analysis tool for parsing common data formats to detect hardcoded credentials and dangerous functions..
Perforce Klocwork: Static code analyzer & SAST tool for C, C++, Java, JavaScript, Python, Kotlin. built by Perforce Software. headquartered in United States. Core capabilities include Static code analysis for C, C++, C#, Java, JavaScript, Python, and Kotlin, Security vulnerability detection including SQL injection, buffer overflow, and tainted data, Compliance with security standards (CWE, OWASP, CERT, PCI DSS, DISA STIG, ISO/IEC TS 17961)..
Both serve the Static Application Security Testing market but differ in approach, feature depth, and target audience.
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