Best AI Code Review Tools with a Free Trial of 2025

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.

Windsurf is a cutting-edge IDE designed for developers to maintain focus and productivity through AI-driven assistance. At the heart of the platform is Cascade, an intelligent agent that not only fixes bugs and errors but also anticipates potential issues before they arise. With built-in features for real-time code previews, automatic linting, and seamless integrations with popular tools like GitHub and Slack, Windsurf streamlines the development process. Developers can also benefit from memory tracking, which helps Cascade recall past work, and smart suggestions that enhance code optimization. Windsurf’s unique capabilities ensure that developers can work faster and smarter, reducing onboarding time and accelerating project delivery.

Bito helps developers and teams review code faster and with more consistency using AI. Our AI Code Review Agent looks at the full codebase to give smart, reliable suggestions on pull requests. Teams use Bito to speed up reviews, reduce regressions, and improve code quality without adding overhead. Bito works with GitHub, GitLab, and Bitbucket and requires no setup beyond a one-click install. No code is stored and no model is trained.

GitHub Copilot represents the next evolution of intelligent software development, combining AI-driven coding, collaboration, and automation in a single ecosystem. It seamlessly integrates with GitHub and leading IDEs, transforming natural language prompts into working code, tests, and documentation. The new Agent Mode allows developers to delegate tasks—Copilot autonomously writes, executes, and validates code using GitHub Actions, delivering ready-to-review pull requests. Developers can interact through Copilot Chat, switch between models like GPT-5, Claude Sonnet 4, and Gemini 2.0 Flash, and refine results with contextual feedback. Next Edit Suggestions and automated code review ensure project-wide consistency, helping teams catch bugs before they reach production. With Copilot Spaces, teams can organize shared context—code, notes, and knowledge—to produce tailored, high-quality results. Available in Free, Pro, and Pro+ plans, Copilot scales from individuals to enterprises with flexible model access and premium capabilities. Ultimately, GitHub Copilot transforms development from manual iteration to AI-augmented collaboration, enabling engineers to focus on innovation instead of boilerplate.

Amp is a next-generation AI-powered coding assistant created by Sourcegraph to transform how software is developed by individuals and teams alike. Powered by cutting-edge models, Amp delivers production-ready code changes by autonomously reasoning through tasks and executing complex edits. It integrates smoothly into existing developer workflows through CLI and VS Code extensions, making it accessible without additional user interface overhead. The tool encourages collaboration by default, allowing teams to share code threads, context, and best practices, which drives continuous improvement and adoption. Designed to support everything from solo developers to large-scale enterprises, Amp ensures security and compliance with features like enterprise single sign-on and zero retention of large language model data. The product’s quality focus sets it apart, delivering results that users describe as faster and more reliable than alternatives. Amp’s community of engineers and creators actively share feedback to refine the tool, supported by extensive documentation and podcasts. Its mission is to accelerate software building while maintaining high-quality outcomes.

Augment Code is an AI agent built to enhance the coding experience for software engineers working with large and complex codebases. It integrates effortlessly into IDEs like Visual Studio Code, IntelliJ IDEA, Node, and Vim, offering a suite of tools for SDK migration, code refactoring, and code documentation. By leveraging machine learning, Augment Code automatically adapts to a developer’s style and memory, improving the quality of code generation and ensuring consistency across multiple repos. The platform is compatible with over 100 native and MCP tools, enabling engineers to debug, explain, and refine code in their familiar environments without needing to switch tools. Augment Code's deep integration with popular collaboration platforms like GitHub and Slack further streamlines workflows, making it easier for teams to collaborate and maintain high-quality code. Trusted by leading software teams, Augment Code helps developers write code like senior engineers, boosting productivity and reducing the complexity of large projects.

Snyk is the leader in developer security. We empower the world’s developers to build secure applications and equip security teams to meet the demands of the digital world. Our developer-first approach ensures organizations can secure all of the critical components of their applications from code to cloud, leading to increased developer productivity, revenue growth, customer satisfaction, cost savings and an overall improved security posture. Snyk is a developer security platform that automatically integrates with a developer’s workflow and is purpose-built for security teams to collaborate with their development teams.

GoCodeo is a comprehensive AI platform for developers that accelerates coding, testing, and debugging processes. The platform integrates with VS Code to offer real-time assistance, from generating code snippets to automatically creating unit tests. GoCodeo’s AI-driven tools also provide debugging insights, enabling developers to identify and fix issues faster. With support for multiple programming languages and frameworks, GoCodeo empowers developers to write high-quality, production-ready code with less effort, streamlining development cycles and enhancing efficiency across projects.

Enhance the speed and efficiency of software development and delivery by leveraging generative AI support, all while ensuring robust enterprise security and privacy safeguards. Gemini Code Assist streamlines your coding process by completing your code as you type and can generate entire code blocks or functions upon request. This powerful code assistance tool is compatible with a variety of popular integrated development environments (IDEs) like Visual Studio Code and JetBrains IDEs (including IntelliJ, PyCharm, GoLand, and WebStorm), as well as Cloud Workstations and Cloud Shell Editor, supporting over 20 programming languages such as Java, JavaScript, Python, C, C++, Go, PHP, and SQL. Utilizing a natural language chat interface, you can easily interact with Gemini Code Assist to obtain solutions to your coding queries or gain insights into coding best practices, with chat functionality accessible across all supported IDEs. Organizations have the flexibility to tailor Gemini Code Assist by integrating their private codebases and knowledge repositories, enabling the tool to provide more personalized assistance that aligns with specific enterprise needs. Furthermore, Gemini Code Assist has the capability to facilitate extensive modifications across entire codebases, thereby optimizing the development workflow significantly. This adaptability not only boosts productivity but also empowers teams to innovate more rapidly in a secure environment.

Amazon CodeGuru is an advanced developer tool that leverages machine learning to offer insightful suggestions for enhancing code quality and pinpointing the most costly lines of code within an application. By seamlessly incorporating Amazon CodeGuru into your current software development processes, you can benefit from integrated code reviews that highlight and optimize costly code segments, ultimately leading to cost savings. Additionally, Amazon CodeGuru Profiler assists developers in identifying the most expensive lines of code, providing detailed visualizations and actionable advice for optimizing performance and reducing expenses. Furthermore, the Amazon CodeGuru Reviewer employs machine learning techniques to detect significant issues and elusive bugs during the development phase, thereby elevating the overall quality of the codebase while facilitating more efficient application development. This powerful combination of tools ensures that developers not only write better code but also maintain a focus on cost efficiency throughout the software lifecycle.

Velocity provides detailed, contextual analytics that enable engineering leaders to help their team members, resolve team roadblocks and streamline engineering processes. Engineering leaders can get actionable metrics. Velocity transforms data from commits to pull requests into the insights that you need to make lasting improvements in your team's productivity. Quality: Automated code reviews for test coverage, maintainability, and more so you can save time and merge with confidence. Automated code review comments for pull requests. Our 10-point technical debt assessment gives you real-time feedback so that you can focus on the important things in your code review discussions. You can get perfect coverage every time. Check coverage line-by-line within diffs. Never merge code again without passing sufficient tests. You can quickly identify files that are frequently modified and have poor coverage or maintainability issues. Each day, track your progress towards measurable goals.

CodeScene's powerful features go beyond traditional code analysis. Visualize and evaluate all the factors that influence software delivery and quality, not just the code itself. Make informed, data-driven decisions based on CodeScene’s actionable insights and recommendations. CodeScene guides developers and technical leaders to: - Get a holistic overview and evolution of your software system in one single dashboard. - Identify, prioritize, and tackle technical debt based on return on investment. - Maintain a healthy codebase with powerful CodeHealth™ Metrics, spend less time on rework and more time on innovation. - Seamlessly integrate with Pull Requests and editors, get actionable code reviews and refactoring recommendations. - Set Improvement goals and quality gates for teams to work towards while monitoring the progress. - Support retrospectives by identifying areas for improvement. - Benchmark performance against personalized trends. - Understand the social side of the code, measure socio-technical factors like key personnel dependencies, knowledge sharing and inter-team coordination.

CodeSandbox aims to make it easier for you to express your ideas with code, and to validate them. It also removes the hassles of setting up development tooling and sharing your project. Join us to help build the future of web coding. Over 4M developers use the platform each month. This includes organizations like Shopify and Atlassian. Since its launch, creators have created over 35M apps. It's used in thousands of open-source projects like React, Vue and Babel. You can invite your friends, colleagues, or team to join you or simply view your creation by using a URL. Use any of 1M+ packages for building real, powerful applications quickly and efficiently. Import and run repos directly from GitHub or choose from hundreds of templates to start in seconds. Boxy, CodeSandbox's AI-powered coding assistant, is now available to all Pro subscriptions.

Avoid being hampered by onboarding challenges, knowledge silos, or context switching by utilizing Swimm to create and modify documents that are seamlessly integrated with your code, automatically updated, and embedded in your workflow. With a language-agnostic editor and features like Smart Tokens and Snippet Studio, Swimm provides a robust foundation for contemporary documentation practices. Craft engaging, media-rich documents that are closely tied to your codebase with ease. The Auto-sync algorithm ensures your documentation remains aligned with any refactoring or structural changes, sparing you from the hassle of updating file names, function names, or implementations. Swimm actively monitors your documentation as your code changes, alerting you to any discrepancies that arise. You can conveniently access documents alongside the relevant code, maintaining your focus within your IDE. When you click a link, a new tab opens with the documentation rendered flawlessly from Markdown, ensuring a smooth and uninterrupted workflow. This streamlined approach not only enhances collaboration but also maximizes productivity, allowing teams to work more efficiently together.

Work seamlessly with colleagues and AI without having to abandon your preferred tools, thereby reducing interruptions and the need to switch contexts. Pullflow connects user identities and code-review processes across GitHub, Slack, and VS Code, allowing for fluid conversations across different platforms. You can initiate actions from any location and effortlessly return to your workflow. With integrations into GitHub Actions, external CI/CD systems, GitHub apps, and additional services, Pullflow provides a comprehensive overview of your pull requests, spanning from drafts and reviews to testing and deployment. Let Pullflow handle swift actions for you with a simple chat mention or a keyboard shortcut in your IDE, enabling you to request reviews, manage labels, provide feedback, approve, and perform other tasks without needing to navigate to GitHub. This streamlined approach enhances productivity and keeps your focus intact, making collaboration more effective and enjoyable.

Experience a privacy-centric approach to pull request evaluations that offers detailed code recommendations on each line and an evolving interactive chat feature. The changes within the pull request are summarized effectively, making it easier to grasp the purpose behind the modifications. Automated release notes are generated, ensuring they can be seamlessly integrated into your release documentation. Each code alteration is scrutinized with a thorough analysis, providing clear and actionable feedback that's ready for implementation. You can engage with the bot by asking questions directly within your code and supplying additional context for it to generate code snippets. As your conversations with the bot increase, its intelligence grows, leading to quicker review cycles and high-caliber suggestions for code changes. Your information remains private, allowing it to tailor the review process to your needs. This system continually adapts based on your interactions, enhancing the relevance of its recommendations to match your coding style and preferences over time.

Step away from the hassle of writing essays, as Squire effortlessly generates pull request descriptions on your behalf. This tool ensures your team remains aligned through concise descriptions and comprehensive changelogs. With an efficient workflow, Squire engages your team in reviewing PRs while providing them with complete context from your codebase. It excels at identifying various issues, including significant breaking changes, security vulnerabilities, and even minor typographical errors. By enhancing code quality, Squire facilitates a smoother transition of your PRs into production. As a context-sensitive agent, Squire collaborates with you to craft descriptions, evaluate PRs, and adapt to your preferred review style. It not only understands your team's reviewing habits but also customizes its approach through explicit settings and by learning from your team's interactions. Furthermore, it helps to delineate and organize ownership and accountability throughout your entire engineering infrastructure, while ensuring compliance by implementing and upholding regulations on your engineering elements. Ultimately, Squire is your partner in achieving a more streamlined and efficient development process.

Streamline your workflow by delegating smaller tickets to an AI assistant. Tusk empowers software engineers to tackle chore tickets with remarkable efficiency, allowing them to work at the speed of thought. It automatically refines its code modifications to manage any feedback from code reviews attached to the pull request. A competent engineer understands the importance of testing before code deployment. Tusk conducts your automated tests and checks to ensure that the pull request is functional. Even if a pull request is not feasible, we still save you time by offering code context that you can use as a foundation for your work. With Tusk, you can remain undistracted by project managers concerning chore tickets and concentrate on meaningful tasks while elevating your product's quality. Investigating and resolving customer-reported bugs can take considerable time and effort. Allow Tusk to conduct the initial assessment for fixing these issues. We recognize that your time is better spent than simply adjusting a word in a header or searching and replacing terms throughout numerous files. Let Tusk manage your product quality backlog and handle the UI/UX updates that you may have been postponing for far too long. In doing so, you can reclaim your time and focus on more significant aspects of your projects.

Optimize your Git commands and effortlessly manage stacked pull requests directly from your terminal. You can visually create and modify stacked PRs without leaving your integrated development environment, ensuring a seamless workflow. Keep all of your PRs and review requests organized in a single inbox for easy tracking. Receive immediate, actionable insights on each pull request thanks to Graphite's AI, which is aware of the codebase context. Prevent merge conflicts and maintain a clean main branch, regardless of whether your team consists of 10 or 10,000 members. Boost your team's productivity with robust, real-time metrics for developers. Experience a faster, more intuitive Git interface that simplifies the stacking process. Use the command 'gt create' again to add another branch atop your existing changes, eliminating the need to wait for merges into the main branch. Your local stack will automatically sync with remote updates, and you can easily tidy up outdated branches using 'gt sync'. Modify changes across your entire stack with the 'gt modify' command, while Graphite takes care of all the recursive rebasing tasks for you. With 'gt submit', you can create or update PRs for each branch within your stack, ensuring a streamlined and efficient development process. This innovative approach to Git management empowers developers to focus more on coding rather than on handling complex version control issues.

Astronuts is an innovative code review platform powered by AI, aimed at enhancing the development workflow by automating the processes of code reviews and bug corrections. Developers can easily kick off code evaluations with a straightforward command, receiving intelligent, line-by-line feedback and suggestions for automatic fixes. This platform boasts various features, including summaries for pull requests, metrics on code quality, and detailed change logs, all presented within an intuitive interface. By integrating effortlessly with GitHub, Astronuts empowers teams to keep track of pull request sizes and monitor code health metrics, significantly cutting down on the time spent on code reviews while also decreasing the occurrence of bugs. Additionally, the platform facilitates real-time chat for addressing code-related inquiries, offers customizable settings for behavior, and establishes rules to uphold coding standards. Supporting a range of programming languages and build systems, Astronuts is well-equipped to serve various development environments effectively. Moreover, the platform provides a free trial along with $5 in credits, allowing teams to test its features without any upfront investment, making it an attractive option for organizations looking to enhance their coding practices. Overall, Astronuts aims to transform the way development teams approach code quality and efficiency.

Accelerate the development of highly secure software with the assistance of AI throughout every phase of the software development process. GitLab Duo serves as an AI-enhanced companion that is seamlessly woven into the GitLab ecosystem, aiming to boost productivity and foster teamwork in software development. It offers smart code recommendations, aids in code refactoring and debugging, and simplifies workflows by automating mundane tasks. Additionally, GitLab Duo allows for natural language inquiries related to project management and development insights, granting developers a more intuitive way to engage with their repositories. With integration into popular IDEs such as JetBrains and Neovim, GitLab Duo provides uninterrupted support within the environments that developers favor. Through the fusion of AI-driven productivity and GitLab’s comprehensive DevSecOps capabilities, GitLab Duo empowers teams to produce superior software at a quicker pace while enhancing collaborative efforts. This innovative tool ultimately transforms the way teams approach software development.

Devlo is an innovative AI-driven assistant that aims to expedite the software development lifecycle by automating essential tasks such as bug resolution, feature implementation, code improvements, and testing processes. This platform is designed to work effortlessly with GitHub repositories, allowing developers to manage tickets, assess pull requests, and create unit tests with great efficiency. With its advanced AI features, devlo can comprehend and validate code modifications, automate subsequent tasks, and deliver expert-grade code evaluations in less than a minute. By taking care of repetitive development chores, devlo enables teams to concentrate on creative solutions and accelerate product launches, while maintaining high standards of code quality and security. It is compatible with all leading programming languages and prioritizes enterprise-level security and confidentiality, making it a reliable choice for development teams. This ensures that organizations can innovate without compromise while leveraging AI technology to enhance their workflow.

Matter AI serves as an AI-driven code review tool that optimizes pull request workflows by producing comprehensive, context-sensitive summaries in mere seconds, thereby removing the necessity for manual documentation. It improves code integrity by detecting bugs, security vulnerabilities, and performance concerns prior to deployment. Matter AI seamlessly integrates with various internal platforms such as Notion, JIRA, Confluence, and Linear, delivering dependable summaries and code evaluations. The AI-generated explanations assist reviewers in grasping intricate code swiftly, facilitating smoother approvals and minimizing review durations. With a robust focus on security, Matter AI boasts SOC 2 Type II certification and guarantees data confidentiality by processing code within isolated environments without retaining any proprietary information. This innovative tool is particularly suited for development teams seeking to expedite their code review processes while upholding superior standards of code quality and security. Additionally, Matter AI fosters collaboration among team members, allowing for a more efficient and cohesive development environment.

Entelligence AI serves as a powerful engineering intelligence platform that leverages artificial intelligence to optimize development processes, foster teamwork, and elevate productivity throughout the software development lifecycle. By utilizing intelligent agents, it automates the tasks of code reviews and pull request (PR) assessments, significantly reducing review durations, identifying bugs at early stages, and enhancing overall engineering efficiency. The platform’s Deep Review functionality analyzes complex issues across multiple files through comprehensive context analysis of the entire codebase, delivering insightful PR summaries, smart comments, and prompt fixes. In addition, Entelligence AI provides valuable performance metrics that monitor team dynamics, sprint advancements, and code quality, offering real-time insights into individual engineer output, review thoroughness, and sprint evaluations. Furthermore, its innovative self-updating documentation capability translates code into easily understandable documentation, automatically refreshing the content with every new commit, ensuring that developers have access to the most current information. This comprehensive set of features positions Entelligence AI as an indispensable tool for modern software development teams aiming for efficiency and clarity.

Macroscope serves as an AI-driven analytics and visibility platform tailored for engineering and product teams, linking seamlessly with a company's codebase, commit history, issue tracking systems like Linear or Jira, and Slack to automatically produce insights regarding the development process. By employing code-walking techniques on the Abstract Syntax Tree (AST), it comprehensively evaluates changes to grasp the relationships and dependencies within the code, ultimately generating summaries for commits, pull requests (which include automated reviews and descriptions), shifts in the overall codebase, and patterns in feature development or bug resolution. Stakeholders can inquire about progress using natural language queries, such as “What did we ship last week?”, gain insights into the allocation of engineering resources, identify significant bugs with a reduced rate of false positives, and monitor productivity and status without the need to scrutinize every single difference in the code. This tool enhances the efficiency of communication among team members by centralizing information and fostering a clearer understanding of project statuses.