Best Free Static Code Analysis Software

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 advanced program analysis to find and automatically fix vulnerabilities. ZeroPath provides complete security coverage: 1. AI-powered SAST for business logic flaws & broken authentication 2. SCA with reachability analysis 3. Secrets detection and validation 4. Infrastructure as Code 5. Automated patch generation. any more... ZeroPath delivers 2x more real vulnerabilities with 75% fewer false positives. Our research team has been successful in finding vulns 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.

Professional collaborative platform for embedded development. PlatformIO is a next-generation, collaborative platform for embedded development that enables customers to save resources and time by vastly reducing the expenses and labor associated with creating and maintaining product software. We believe the embedded systems industry desperately needs reinvention. Not only are the IDEs and tools built with technology from the 1990s, but they involve many complex requirements and platform-dependent configurations that turn away talented developers from becoming embedded engineers. The most loved IDE solution for Microsoft Visual Studio Code. A user-friendly and extensible integrated development environment with a set of professional development instruments, providing modern and powerful features to speed up yet simplify the creation and delivery of embedded products. PlatformIO is written in pure Python and doesn't depend on any additional libraries/tools from an operation system.

The YAG-Suite is a French made innovative tool which brings SAST one step beyond. Based on static analysis and machine learning, YAGAAN offers customers more than a source code scanner : it offers a smart suite of tools to support application security audits as well as security and privacy by design DevSecOps processes. Beyond classic vulnerability detection, the YAG-Suite focuses the team attention on the problems that really matter in their business context, it supports developers in their understanding of the vulnerability causes and impacts. Its contextual remediation support them in fixing efficiently the problems while improving their secure coding skills. Additionally, YAG-Suite's unprecedented 'code mining' support security investigations of an unknown application with mapping all relevant code features and security mechanisms and offers querying capabilities to search for 0-days or non automatically detectable risks. PHP, Java and Python are supported. JS, C/C++ coming soon

Modern security teams are “paving the road” for developers — enforcing code guardrails on every commit. r2c’s Semgrep can eliminate vulnerability classes organization-wide. Scale your security team with lightweight static analysis. Semgrep is a fast, open-source, static analysis tool that excels at expressing code standards — without complicated queries — and surfacing bugs early in the development flow. Precise rules look like the code you’re searching; no more traversing abstract syntax trees or wrestling with regexes. Start right away with 900+ rules and SaaS infrastructure to get fast results in your editor, at commit-time, or in CI. When off-the-shelf rules aren’t enough, quickly and intuitively write custom rules to express your unique code standards. Rules look like the code you’re searching. For example, rules for Go look like Go. Find function calls, class or method definitions, and more without having to understand abstract syntax trees or wrestle with regexes.

The Puma Scan Professional End User Edition allows developers to run Puma Scan with a Visual Studio extension. This edition includes enhanced features, fewer false positives and support options. The End User license is valid for one year and renewed annually. The Server Edition allows command line scanning and integration with your build server without the overhead of Visual Studio. Each Server license may be used on up to 5 build agents in a single organization. Build Agent Bundles can be purchased in groups of 5. The Azure DevOps Extension adds a Puma Scan build task to your Azure DevOps pipelines. Azure DevOps Standard licenses allow scanning in up to 20 build pipelines. Azure DevOps Unlimited licenses allow unlimited scanning within a single organization.

Static code analysis by Qodana helps development teams follow agreed quality standards, and deliver readable, maintainable, and secure code. Powered by JetBrains. We’ve been perfecting the code analysis in our IDEs for 20+ years based on feedback from millions of community members. Qodana relies on the lines of JetBrains IDEs and brings their intelligence to the CI side. Just like in our IDEs, Qodana’s analysis is accurate but not overbearing and understands the nuances of your code. Integration with tools developers use daily, including JetBrains IDEs, makes it easy to work with Qodana’s results in whichever tool you're most comfortable with. Qodana doesn’t only report problems; it also suggests automatic fixes. Qodana calculates licenses per active contributor, so it won’t cause unexpected expenses or charge you for growing your project (as we don’t calculate LOCs). It’s also free for open-source projects.

With AI-powered remediation, static analysis, secret scanning, and software composition analysis, GitHub Advanced Security helps developers and security teams work together to eliminate security debt and keep new vulnerabilities out of code. Code scanning with Copilot Autofix detects vulnerabilities, provides contextual explanations, and suggests fixes in the pull request and for historical alerts. Solve your backlog of application security debt. Security campaigns target and generate autofixes for up to 1,000 alerts at a time, rapidly reducing the risk of application vulnerabilities and zero-day attacks. Secret scanning with push protection guards over 200 token types and patterns from more than 150 service providers, even elusive secrets like passwords and PII. Powered by security experts and a global community of more than 100 million developers, GitHub Advanced Security provides the insights and automation you need to ship more secure software on schedule.

Brakeman is a security scanner for Ruby on Rails applications. Unlike many web security scanners, Brakeman looks at the source code of your application. This means you do not need to set up your whole application stack to use it. Once Brakeman scans the application code, it produces a report of all security issues it has found. Brakeman requires zero setup or configuration once it is installed. Just run it. Because all Brakeman needs is source code, Brakeman can be run at any stage of development: you can generate a new application with rails new and immediately check it with Brakeman. Since Brakeman does not rely on spidering sites to determine all their pages, it can provide more complete coverage of an application. This includes pages which may not be ‘live’ yet. In theory, Brakeman can find security vulnerabilities before they become exploitable. Brakeman is specifically built for Ruby on Rails applications, so it can easily check configuration settings for best practices.

Empowering modern development teams to find, fix and prevent vulnerabilities related to source code, open source libraries, secret management and cloud configuration. Empowering modern development teams to find, fix, and prevent security vulnerabilities in their applications. Continuous security scanning reduces cycle times and speeds up the shipping of features. Our expert system reduces the amount of false alerts and only informs about relevant security issues. Consistent security scanning across the entire product portfolio results in more secure software. GuardRails provides a completely frictionless integration with modern Version Control Systems like Github and GitLab. GuardRails seamlessly selects the right security engines to run based on the languages in a repository. Every single rule is curated to decide whether it has a high security impact issue resulting in less noise. Has built an expert system that detects false positives that is continuously tuned to be more accurate.

Reduce 1000s of hours of static code analysis fixes to minutes. Patch security vulnerabilities across 100s of repositories at once. Moderne automates code remediation tasks for you, enabling developers to deliver more business value all the time. Automatically make safe, sweeping changes to your codebase that improve the quality, security, and cost of code. Manage dependencies of your software supply chain, keeping software up to date continuously. Alleviate code smells automatically without all the scanning noise of SAST and SCA tools. Work in high-quality code all the time. Find and fix CVEs automatically across repositories, it's the ultimate shift left for security. The reality of modern applications is that they naturally accrue technical debt. They are composed of large and diverse codebases and ecosystems, and a supply chain of custom, third-party, and open-source software.

Discover vulnerabilities across a codebase with CodeQL, our industry-leading semantic code analysis engine. CodeQL lets you query code as though it were data. Write a query to find all variants of a vulnerability, eradicating it forever. Then share your query to help others do the same. CodeQL is free for research and open source. Run real queries on popular open source codebases using CodeQL for Visual Studio Code. See how powerful it is to discover a bad pattern and then find similar occurrences across the entire codebase. You can create CodeQL databases yourself for any project that's under an OSI-approved open source license. GitHub CodeQL can only be used on codebases that are released under an OSI-approved open source license, to perform academic research, or to generate CodeQL databases for or during automated analysis. Download and add the project’s CodeQL database to VS Code, or create a CodeQL database using the CodeQL CLI.

RuboCop is a Ruby code style checker (linter) and formatter based on the community-driven Ruby Style Guide. RuboCop is extremely flexible and most aspects of its behavior can be tweaked via various configuration options. In practice RuboCop supports pretty much every (reasonably popular) coding style that you can think of. Apart from reporting problems in your code, RuboCop can also automatically fix some of the problems for you. RuboCop packs a lot of features on top of what you’d normally expect from a linter. Works with every major Ruby implementation. Auto-correction of many of the code offenses it detects. Robust code formatting capabilities. Multiple result formatters for both interactive use and for feeding data into other tools. Ability to have different configuration for different parts of your codebase. Ability to disable certain cops only for specific files or parts of files.