Semgrep has a free tier with limits. Paid plans unlock more usage and features. See pricing above for the current plans.

What are the main benefits of Semgrep?

Write custom rules in simple YAML syntax without regex expertise. Scan code locally or offline—no source code sent to cloud by default. Support for 30+ programming languages with growing rule library.

Semgrep

Static analysis engine for finding bugs, security issues, and anti-patterns

4.4(230 reviews)freemiumFounded 2026

free tieropen sourceapi access

Integrates with

Slack GitHub

Semgrep scans source code using pattern-matching rules to detect vulnerabilities, code quality issues, and security misconfigurations. Built for developers and security teams integrating automated code review into CI/CD pipelines.

Semgrep performs lightweight static analysis by matching custom or pre-built rules against code without executing it. Supports 30+ languages including Python, JavaScript, Go, Java, and C. Runs locally or in CI/CD with fast scan times. Offers free open-source rules, commercial rule sets for compliance (OWASP, CWE), and integrations with GitHub, GitLab, Slack, and Jira. No cloud requirement for core scanning.

Pros

Write custom rules in simple YAML syntax without regex expertise
Scan code locally or offline—no source code sent to cloud by default
Support for 30+ programming languages with growing rule library
Fast scanning with minimal false positives compared to traditional SAST tools
Free tier with community rules and open-source projects

Cons

Requires learning rule syntax for custom patterns; limited IDE feedback
Smaller rule database than enterprise SAST tools like Checkmarx or Veracode
Performance degrades on very large monorepos without optimization

Best For

Development teams and security engineers who need fast, customizable static analysis integrated into CI/CD without vendor lock-in or cloud dependencies.