Best Static Application Security Testing (SAST) Software for Ruby

ZeroPath (YC S24) is an AI-native application security platform that delivers comprehensive code protection beyond traditional SAST. Founded by security engineers from Tesla and Google, ZeroPath combines large language models with deep program analysis to deliver intelligent security testing that finds real vulnerabilities while dramatically reducing false positives. Unlike traditional SAST tools that rely on pattern matching, ZeroPath understands code context, business logic, and developer intent. This enables identification of sophisticated security issues including business logic flaws, broken authentication, authorization bypasses, and complex dependency vulnerabilities. Our comprehensive security suite covers the application security lifecycle: 1. AI-powered SAST 2. Software Composition Analysis with reachability analysis 3. Secrets detection and validation 4. Infrastructure as Code scanning 5. Automated PR reviews 6. Automated patch generation and more... ZeroPath integrates seamlessly with GitHub, GitLab, Bitbucket, Azure DevOps and many more. The platform handles codebases with millions of lines across Python, JavaScript, TypeScript, Java, Go, Ruby, Rust, PHP, Kotlin and more. Our research team has been successful in finding vulnerabilities like critical account takeover in better-auth (CVE-2025-61928, 300k+ weekly downloads), identifying 170+ verified bugs in curl, and discovering 0-days in production systems at Netflix, Hulu, and Salesforce. Trusted by 750+ companies and performing 200k+ code scans monthly.

Parasoft's mission is to provide automated testing solutions and expertise that empower organizations to expedite delivery of safe and reliable software. A powerful unified C and C++ test automation solution for static analysis, unit testing and structural code coverage, Parasoft C/C++test helps satisfy compliance with industry functional safety and security requirements for embedded software systems.

Modern software development must be as fast as the business. The modern AppSec toolbox lacks integration, which creates complexity that slows down software development life cycles. Contrast reduces the complexity that hinders today's development teams. Legacy AppSec uses a single-size-fits all approach to vulnerability detection and remediation that is inefficient, costly, and expensive. Contrast automatically applies the most efficient analysis and remediation technique, greatly improving efficiency and effectiveness. Separate AppSec tools can create silos that hinder the collection of actionable intelligence across an application attack surface. Contrast provides centralized observability, which is crucial for managing risks and capitalizing upon operational efficiencies. This is both for security and development teams. Contrast Scan is a pipeline native product that delivers the speed, accuracy and integration required for modern software development.

Flawnter automates static application security testing to detect hidden security bugs and quality issues at the source. Flawnter is a great alternative to manual code review. It can speed up the process and find bugs you may not have noticed. You can either create your own extensions for Flawnter or use existing ones. Extensions allow you to test more bugs and expand your testing coverage. Extensions are easy and allow you to access Flawnter functionality. Flawnter has a simple and flexible pricing structure that makes it affordable for all sizes of organizations to improve their application code security. Other options are also available.

Coverity Static Analysis serves as an all-encompassing solution for code scanning, assisting both developers and security teams in producing superior software that meets security, functional safety, and various industry standards. It efficiently detects intricate defects within large codebases, pinpointing and addressing quality and security concerns that may arise across multiple files and libraries. Coverity ensures adherence to numerous standards such as OWASP Top 10, CWE Top 25, MISRA, and CERT C/C++/Java, and offers comprehensive reports that help in monitoring and prioritizing issues. By utilizing the Code Sight™ IDE plugin, developers benefit from immediate feedback, including insights on CWE and instructions for remediation, directly integrated into their development settings, which helps to weave security practices seamlessly into the software development lifecycle while maintaining developer productivity. This tool not only contributes to enhanced code integrity but also fosters a culture of continuous improvement in software security practices.