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Best Free Alternatives to Checkmarx One (2026 Edition)
Stop paying $1,035 (SAST Only) - $1,564+ (Essentials) / dev / yr. Discover professional-grade tools that won't break your budget.
Category: Cloud-Native AppSec PlatformVerified for 2025
Top Recommended Replacements
SonarQube (SonarQube Server)
FREEBest for Code Quality & Logic
Why we like it
Community Edition is 100% free; world-class tracking of 'Code Smells' and technical debt; high performance with low false-positive rates for Java, C#, and JS.
Keep in mind
The free tier lacks advanced security-specific rules (SAST) and enterprise reporting; setup is more manual than cloud-native rivals.
Snyk
FREEBest Developer-First Alternative
Why we like it
Incredible 'Shift Left' experience with instant IDE feedback; the industry leader in SCA (Open Source vulnerability scanning); high-speed scanning (100x faster than legacy tools).
Keep in mind
SAST depth is occasionally less 'forensic' than Checkmarx on obscure languages; pricing can scale rapidly as the team grows.
Semgrep
FREEBest for High-Speed Dev Teams
Why we like it
Lightweight, rules-based engine that runs in seconds; 100% free open-source core; extremely easy to write custom security rules tailored to your specific codebase.
Keep in mind
Lacks the massive out-of-the-box compliance reporting (SOC2/PCI) that Checkmarx provides for large enterprises.
DeepSource
FREEBest Modern AI-Native Rival
Why we like it
Built-in 'Autofix™' AI that actually opens Pull Requests to fix bugs; transparent per-seat pricing with no minimums; zero-configuration cloud-first setup.
Keep in mind
Focuses more on the 'Inner Loop' of development; less focus on legacy 'Cloud Posture' (CSPM) than the Checkmarx One suite.
Bandit
FREEBest for Python-Specific Security
Why we like it
The community standard for Python; 100% free; zero tracking or licensing overhead; can be integrated into any pipeline in minutes.
Keep in mind
Python-only; no GUI; strictly a command-line utility for technical users.
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