Best Free Static Code Analysis Software of 2025

PlatformIO is an innovative collaborative platform designed specifically for embedded development, allowing users to conserve both time and resources by significantly lowering the costs and effort needed for software creation and maintenance. The embedded systems sector is in dire need of a transformative approach, as many existing IDEs and tools rely on outdated technology from the 1990s, presenting intricate requirements and platform-specific configurations that discourage skilled developers from pursuing careers in embedded engineering. Recognized as the most favored IDE solution for Microsoft Visual Studio Code, it offers a user-friendly and highly extensible integrated development environment equipped with a comprehensive suite of professional development tools. These tools are engineered to enhance both the speed and simplicity of embedded product creation and delivery. Additionally, PlatformIO is crafted entirely in pure Python, ensuring that it operates independently of any external libraries or system tools, which further streamlines the development process and fosters a more efficient workflow. Its commitment to modernizing embedded development makes it an essential choice for developers looking to innovate in this space.

The YAG Suite is a French-made innovative tool that takes SAST to the next level. YAGAAN is a combination of static analysis and machine-learning. It offers customers more than a sourcecode scanner. It also offers a smart suite to support application security audits and security and privacy through DevSecOps design processes. The YAG-Suite supports developers in understanding the vulnerability causes and consequences. It goes beyond traditional vulnerability detection. Its contextual remediation helps them to quickly fix the problem and improve their secure coding skills. YAG-Suite's unique 'code mining' allows for security investigations of unknown applications. It maps all relevant security mechanisms and provides querying capabilities to search out 0-days and other non-automatically detectable risks. PHP, Java and Python are currently supported. Next languages in roadmap are JS, C and C++.

Validate modifications across numerous supported resource types in all leading cloud service providers. Conduct scans of cloud resources during the build phase to identify misconfigured settings using a straightforward Python policy-as-code framework. Examine the connections between cloud resources through Checkov’s graph-oriented YAML policies. Run, test, and adjust runner parameters within the context of a specific repository's CI/CD processes and version control systems. Customize Checkov to create your own unique policies, providers, and suppression terms. Avoid the deployment of misconfigurations by integrating this process into the current workflows of developers. Facilitate automated annotations on pull or merge requests in your repositories, eliminating the need to establish a CI pipeline or perform routine checks. The Bridgecrew platform will automatically review new pull requests and provide comments highlighting any policy violations it uncovers, ensuring continuous compliance and security improvements in your cloud infrastructure. This proactive approach helps maintain best practices and enhances the overall security posture of your cloud environment.

Hubbl Diagnostics: Empowering the Salesforce Ecosystem with Intelligent Org Solutions At Hubbl Diagnostics, we're dedicated to uplifting and empowering the entire Salesforce ecosystem through our powerful org intelligence solutions. We provide Salesforce admins, architects, and consultants with the broadest and most actionable insights into any Salesforce org. Our mission is clear: to help organizations tackle technical debt, eliminate redundant automation, and navigate the ever-expanding complexity of their Salesforce orgs. By doing so, we enable businesses to maximize their return on investment in Salesforce, achieving results faster than ever before. What sets Hubbl Diagnostics apart is our proprietary metadata aggregation, which not only delivers invaluable insights but also equips the Salesforce ecosystem with benchmark data. With this data, users can easily measure and compare their org complexity against others in their industry, gaining a competitive edge. Through the power of Hubbl Diagnostics, companies can transform their Salesforce operations, streamlining processes, optimizing efficiency, and achieving unparalleled success.

Sourcetrail serves as an interactive tool designed to enhance the exploration of existing source code by systematically indexing it and collecting information about its architecture. This tool offers a user-friendly interface composed of three dynamic views, each essential for accessing the necessary information efficiently. The Search feature enables users to swiftly locate and choose indexed symbols within the source code. An autocompletion box appears, providing an immediate overview of all relevant results found throughout the entire codebase. The Graph view visualizes the arrangement of your source code, emphasizing the currently selected symbol while illustrating its incoming and outgoing dependencies with other symbols. Meanwhile, the Code view lists all the source locations tied to the selected symbol through various code snippets, and clicking on any listed location allows users to shift their selection for a more in-depth analysis. Overall, Sourcetrail significantly streamlines the process of understanding complex code structures.

Enhance your productivity by ensuring only high-quality code is released, as SonarQube Cloud (previously known as SonarCloud) seamlessly evaluates branches and enriches pull requests with insights. Identify subtle bugs to avoid unpredictable behavior that could affect users and address security vulnerabilities that threaten your application while gaining knowledge of application security through the Security Hotspots feature. Within moments, you can begin using the platform right where your code resides, benefiting from immediate access to the most current features and updates. Project dashboards provide vital information on code quality and readiness for release, keeping both teams and stakeholders in the loop. Showcase project badges to demonstrate your commitment to excellence within your communities. Code quality and security are essential across your entire technology stack, encompassing both front-end and back-end development. That’s why we support a wide range of 24 programming languages, including Python, Java, C++, and many more. The demand for transparency in coding practices is on the rise, and we invite you to be a part of this movement; it's completely free for open-source projects, making it an accessible opportunity for all developers! Plus, by participating, you contribute to a larger community dedicated to improving software quality.

Contemporary security teams are essentially creating a supportive environment for developers by implementing code guardrails with each commit. With the capabilities of r2c’s Semgrep, organizations can effectively eradicate classes of vulnerabilities across the board. Enhance the efficiency of your security team through the use of lightweight static analysis tools. Semgrep stands out as a rapid, open-source static analysis solution that simplifies the expression of coding standards without the need for complex queries, allowing for early detection of bugs in the development process. The rules are designed to mirror the code being analyzed, eliminating the challenges associated with navigating abstract syntax trees or dealing with regex complexities. You can easily get started with over 900 pre-existing rules and utilize SaaS infrastructure to receive quick feedback directly in your editor, at the time of commit, or within continuous integration environments. If the standard rules do not meet your specific needs, you can swiftly and easily craft custom rules that reflect your organization’s unique coding standards, with the syntax resembling the target code. For instance, rules tailored for Go are presented in a way that aligns closely with the Go language itself, enabling you to identify function calls, class and method definitions, and much more without the burden of abstract syntax trees or regex challenges. This approach not only streamlines the security process but also empowers developers to maintain high-quality code more efficiently.

The Puma Scan Professional End User Edition enables developers to utilize Puma Scan through a Visual Studio extension, featuring improved capabilities, reduced false positives, and various support options. This edition’s license is valid for one year, with the possibility of annual renewal. In contrast, the Server Edition facilitates command line scanning and can be integrated into your build server, all without needing Visual Studio's overhead. A single Server license can be employed across five build agents within the same organization, and additional Build Agent Bundles are available in sets of five for larger needs. Furthermore, the Azure DevOps Extension introduces a Puma Scan build task into your Azure DevOps pipelines, enhancing your development workflow. With Azure DevOps Standard licenses, you can scan up to 20 build pipelines, while Azure DevOps Unlimited licenses permit unrestricted scanning across a single organization, ensuring comprehensive coverage for your projects. This flexibility allows organizations to choose the best licensing option based on their specific scanning requirements.

DeepSource streamlines the process of identifying and resolving code issues during reviews, including risks of bugs, anti-patterns, performance bottlenecks, and security vulnerabilities. Setting it up with your Bitbucket, GitHub, or GitLab account takes under five minutes, making it incredibly convenient. It supports various programming languages such as Python, Go, Ruby, and JavaScript. Additionally, DeepSource encompasses all essential programming languages, Infrastructure-as-Code capabilities, secret detection, code coverage, and much more. This means you can rely solely on DeepSource for code protection. Initiate your development with the most advanced static analysis platform, ensuring that you catch bugs before they make their way into production. It boasts the largest array of static analysis rules available in the market. Your team will benefit from having a centralized location to monitor and address code health effectively. With DeepSource, code formatting can be automated, ensuring your CI pipeline remains intact without style violations disrupting the process. Furthermore, it can automatically generate and implement fixes for detected issues with just a few clicks, enhancing your team's productivity and efficiency.

Access immediate code evaluations from qualified engineers, augmented by AI technology. Each time you initiate a pull request, you can seamlessly integrate senior engineers into your workflow. Accelerate the delivery of superior, secure code with the support of AI-driven code assessments. Whether your development team comprises 5 or 5,000 members, PullRequest will elevate your code review system and tailor it to suit your requirements. Our expert reviewers assist in identifying security threats, uncovering concealed bugs, and addressing performance challenges prior to deployment. This entire process is integrated into your current tools for maximum efficiency. Our seasoned reviewers, bolstered by AI analysis, can target critical security vulnerabilities effectively. We employ advanced static analysis that incorporates both open-source resources and proprietary AI, providing reviewers with enhanced insights. Allow your senior personnel to focus on strategic initiatives while making substantial strides in resolving issues and refining code, even as other team members continue to develop. With this innovative approach, your team can maintain productivity while ensuring code quality.

Qodana’s static code analysis empowers development teams to adhere to established quality benchmarks, ensuring they produce code that is not only readable and maintainable but also secure. Developed by JetBrains, this tool has been refined through over two decades of experience in code analysis, enriched by input from millions of users across the community. By leveraging the insights derived from JetBrains IDEs, Qodana extends their intelligence into the continuous integration (CI) environment. Its analysis is precise yet unobtrusive, adeptly recognizing the intricacies of your codebase. The integration with commonly used tools, including JetBrains IDEs, facilitates seamless interaction with Qodana’s findings in the environment that developers prefer. Additionally, Qodana goes beyond merely identifying issues; it actively recommends automatic solutions to enhance code quality. To ensure budget-friendly usage, Qodana calculates licenses based on active contributors, avoiding unexpected costs associated with project growth, as it does not factor in lines of code. Furthermore, it is available at no cost for open-source initiatives, encouraging innovation and collaboration within the developer community. This commitment to fostering quality and accessibility makes Qodana a valuable asset for any coding team.

GitHub Advanced Security empowers developers and security professionals to collaborate effectively in addressing security debt while preventing new vulnerabilities from entering code through features such as AI-driven remediation, static analysis, secret scanning, and software composition analysis. With Copilot Autofix, code scanning identifies vulnerabilities, offers contextual insights, and proposes solutions within pull requests as well as for past alerts, allowing teams to manage their application security debt more efficiently. Additionally, targeted security campaigns can produce autofixes for up to 1,000 alerts simultaneously, significantly lowering the susceptibility to application vulnerabilities and zero-day exploits. The secret scanning feature, equipped with push protection, safeguards over 200 types of tokens and patterns from a diverse array of more than 150 service providers, including hard-to-detect secrets like passwords and personally identifiable information. Backed by a community of over 100 million developers and security experts, GitHub Advanced Security delivers the necessary automation and insights to help teams release more secure software on time, ultimately fostering greater trust in the applications they build. This comprehensive approach not only enhances security but also streamlines workflows, making it easier for teams to prioritize and address potential threats.

Opengrep serves as an open-source static code analysis tool aimed at uncovering security vulnerabilities in various codebases. Being a fork of Semgrep, it shares a common goal of delivering rapid and effective code pattern searching across over 30 programming languages, such as Python, JavaScript, and Go. The platform allows developers to create personalized rules for pattern detection, which aids in identifying potential security flaws while also encouraging compliance with coding standards. Incorporating Opengrep into the development process empowers teams to take a proactive stance on vulnerabilities, significantly improving the security and reliability of their software projects. Additionally, its user-friendly interface and customizable features make it an appealing choice for developers seeking to enhance their coding practices.

PHPStan is a free, open-source tool designed for static analysis of PHP code, enabling the identification of bugs within your codebase without requiring any additional test development. It performs an in-depth examination of your entire code, uncovering both obvious and nuanced problems, including those present in seldom-executed conditional statements that might elude standard testing. By incorporating PHPStan into your development workflow and continuous integration processes, you can effectively stop bugs from making their way into production environments. This tool is also compatible with older codebases, even those that do not utilize an autoloader, and it allows for progressive enhancements through adjustable rule settings. Such a method empowers developers to systematically improve code quality without feeling overwhelmed by a multitude of errors during the initial analysis. Furthermore, PHPStan embraces advanced PHP functionalities prior to their official implementation, including generics, array shapes, and checked exceptions, all by utilizing PHPDocs. It also provides extensions for well-known frameworks such as Symfony, Laravel, and Doctrine, ensuring that developers have a thorough understanding of their code. Additionally, with PHPStan, teams can maintain coding standards while adapting to new PHP features as they emerge, ultimately fostering a more robust coding environment.

Codacy is an automated code review tool. It helps identify problems through static code analysis. This allows engineering teams to save time and tackle technical debt. Codacy seamlessly integrates with your existing workflows on Git provider as well as with Slack and JIRA or using Webhooks. Each commit and pull-request includes notifications about security issues, code coverage, duplicate code, and code complexity. Advanced code metrics provide insight into the health of a project as well as team performance and other metrics. The Codacy CLI allows you to run Codacy code analysis locally. This allows teams to see Codacy results without needing to check their Git provider, or the Codacy app. Codacy supports more than 30 programming languages and is available in free open source and enterprise versions (cloud or self-hosted). For more see https://www.codacy.com/

The Fastest Code Analysis. 40X faster scan speeds so developers don't have to wait long for results after submitting a pull request. The Most Accurate Result. Qwiet AI is the only AI with the highest OWASP benchmark score. This is more than triple the commercial average, and more than twice the second highest score. Developer-Centric Security Processes. 96% of developers say that disconnected security and developer workflows hinder their productivity. Implementing developer-centric AppSec workflows decreases mean-time-to-remediation (MTTR), typically by 5X - enhancing both security and developer productivity. Automated Business Logic Flaws in Dev. Identify vulnerabilities unique to your codebase before they reach production. Achieve compliance. Maintain and demonstrate compliance with privacy and security regulations such as SOC 2 PCI-DSS GDPR and CCPA.

Modern development teams are empowered to identify, fix, and prevent vulnerabilities in source code, open-source libraries, secret management, cloud configuration, and other areas. Modern development teams are empowered to identify, fix, and prevent security flaws in their applications. Continuous security scanning speeds up feature shipping and reduces cycle time. Our expert system reduces false alarms and only informs you about security issues that are relevant. Software that is consistently scanned across all product lines will be more secure. GuardRails integrates seamlessly with modern Version Control Systems such as GitLab and Github. GuardRails automatically selects the appropriate security engines to run based upon the languages found in a repository. Each rule is carefully curated to determine whether it has a high level security impact issue. This results in less noise. A system has been developed that detects false positives and is constantly improved to make it more accurate.

User-friendly and requiring no setup, simply download from your preferred IDE marketplace and keep coding while SonarQube for IDE (previously known as SonarLint) handles the rest. Unlike your existing linting solutions that often involve additional complexity, such as specific tools for different languages or extensive configuration processes, SonarQube for IDE offers a unified approach to tackling your Code Quality and Code Security challenges. It comes equipped with a vast array of language-specific rules designed to detect Bugs, Code Smells, and Security Vulnerabilities directly within your IDE as you write code. Whether it’s identifying risky regex patterns or ensuring compliance with coding standards, SonarQube for IDE acts as a reliable partner in your quest for flawless code. With this smart tool at your disposal, any errors you make are kept within your view, enabling you to comprehend, swiftly correct, and learn from them effectively, which ultimately enhances your coding skills over time. In this way, SonarQube for IDE not only helps maintain code integrity but also fosters continuous improvement in your development process.

Reduce static code analysis time from 1000s to just minutes. Security vulnerabilities can be fixed across hundreds of repositories in a matter of minutes. Moderne automates code-remediation tasks, allowing developers to deliver more business value every day. Automate safe, sweeping codebase changes that improve quality, security, cost, and code quality. Manage dependencies in your software supply chain - keeping software up-to-date continuously. Eliminate code smells automatically, without the scanning noise of SAST or SCA tools. You will always work in high-quality code. It's the last shift for security. Modern applications naturally accumulate technical debt. They are made up of many codebases and software ecosystems, which include custom, third-party and open-source code. Maintaining your code has become more complicated due to software complexity.

Uncover security weaknesses within a codebase using CodeQL, our premier semantic analysis tool for code. CodeQL empowers you to treat code as if it were data, enabling the writing of queries to identify every variant of a vulnerability, thereby eliminating it for good. By sharing your findings, you can assist others in this vital task. CodeQL is available at no cost for both research and open source projects. Execute real queries against widely-used open source codebases with CodeQL integrated into Visual Studio Code, experiencing firsthand the effectiveness of identifying poor coding practices and pinpointing similar issues throughout the entire codebase. You also have the option to create your own CodeQL databases for any project that complies with an OSI-approved open source license. It’s important to note that GitHub CodeQL is restricted to use on codebases that are either released under an OSI-approved open source license, utilized for academic research, or employed to generate CodeQL databases for automated analyses. To get started, simply download and incorporate the project's CodeQL database into VS Code, or generate a CodeQL database using the CodeQL command-line interface, allowing you to enhance your code's security comprehensively. Utilizing CodeQL not only improves your project but contributes to a safer coding environment for everyone.

Get started with codebeat to monitor every quality change in your GitHub, Bitbucket, GitLab, or self-hosted repositories quickly and effortlessly. With codebeat, you’ll benefit from automated code reviews that accommodate a wide range of programming languages. This tool not only assists in prioritizing issues but also helps you pinpoint quick wins for your web and mobile applications. Additionally, codebeat features an excellent team management system tailored for organizations and open-source contributors alike. You can assign various access levels and swiftly transfer team members between projects, making it an ideal solution for teams of all sizes, whether small or large. By integrating codebeat, you can enhance collaboration and streamline your development process.

Brakeman serves as a security scanner designed specifically for Ruby on Rails applications. Unlike many other web security scanners, which often rely on runtime analysis, Brakeman inspects the source code directly, eliminating the need to configure your entire application environment for usage. After scanning the application's codebase, Brakeman generates a comprehensive report detailing any security vulnerabilities detected. The tool requires no setup or configuration post-installation; you simply execute it. Since all it requires is access to the source code, Brakeman can be utilized at any point during the development process, allowing developers to create a new application with the command rails new and immediately assess it for security flaws. Furthermore, because Brakeman does not depend on crawling websites to uncover all their pages, it offers more thorough coverage, identifying potential issues even in pages that are not yet active. In essence, Brakeman has the capability to uncover security weaknesses before they can be exploited. Tailored specifically for Ruby on Rails applications, Brakeman adeptly verifies configuration settings against established best practices, ensuring a robust security posture. This targeted approach makes Brakeman an invaluable tool for developers concerned with maintaining the integrity and security of their applications.

The Secure Programming Group at the University of Virginia's Department of Computer Science is responsible for the development and ongoing maintenance of Splint. David Evans leads the project and serves as its main developer. Memory bounds checking was created by David Larochelle. Significant contributions to Splint's development were also made by University of Virginia students, including Chris Barker, David Friedman, Mike Lanouette, and Hien Phan. Splint serves as the evolution of LCLint, a tool that originated from a collaborative research effort between the Massachusetts Institute of Technology and Digital Equipment Corporation's System Research Center. David Evans was also the chief designer and developer of LCLint. The initial concept for a static checking tool aimed at identifying discrepancies between LCL specifications and their C implementations came from John Guttag and Jim Horning. Their insights into the design and functionality proved invaluable, playing a crucial role in shaping both LCLint and its successor, Splint. Together, the team has fostered a robust environment for developing tools that enhance software reliability and security.

RuboCop serves as a linter and formatter for Ruby, adhering to the community-supported Ruby Style Guide. Its highly adaptable nature allows users to modify many of its functionalities through various configuration settings. In practice, RuboCop accommodates nearly every popular coding style imaginable. Besides identifying issues within your code, it has the capability to automatically rectify some of these problems. RuboCop is equipped with an array of features that exceed typical linter offerings, making it a comprehensive tool for Ruby developers. It is compatible with all major Ruby implementations and can auto-correct many identified code violations. Additionally, it boasts strong code formatting features, multiple output formats for both interactive use and integration with other tools, and the flexibility to configure different settings for various segments of your codebase. Moreover, users can selectively disable specific cops for particular files or sections, enhancing its usability even further. This combination of flexibility and functionality makes RuboCop an invaluable asset for maintaining code quality in Ruby projects.

Ozcode dramatically improves Visual Studio's debugging experience. It allows you to quickly identify the root cause of any bugs in.NET applications, and then fix them quickly. Ozcode is a powerful tool that allows you to dissect your code and visualize the code at the most detailed levels. It makes debugging much easier than you could ever imagine.