Best Free Code Review Tools of 2024

Codeium is the modern code superpower. It's a free AI-powered code acceleration toolkit. Codeium currently provides AI-generated autocomplete in more than 20 programming languages (including Python and JS, Java, TS, Java and Go) and integrates directly to the developer's IDE (VSCode, JetBrains or Jupyter notebooks. Colab, Vim / Neoovim, etc. Codeium generates multiline code suggestions in a matter of seconds. This will eliminate the need to search for APIs and documentation, write boilerplate and unit test scripts, and many other tedious or frustrating tasks. Codeium is a training platform that allows you to quickly develop on billions of lines. It also helps you stay in the flow and lets you become the best coder you can be.

Code review doesn’t have to be difficult. Review Board takes the hassle out of code review. This saves you time, money, sanity, and allows you to focus on creating great software. You can review almost anything. You can review code, documents, artwork, and everything in between. There are many more things to your project than code. Documentation, artwork and website designs are all important. A picture is worth a thousand words and can be key to a review. Drag-and-drop images to your review request to instantly make them reviewable. Your team will have the ability to click-and drag anywhere on the image to leave a comment. You'll be able to see their comment along with the relevant portion of the image when they do. Did you make a change to the image? Upload a new revision to view a visual diff. Sometimes, you may have text content that is not in your source tree.

GitGuardian is a global cybersecurity startup focusing on code security solutions for the DevOps generation. A leader in the market of secrets detection and remediation, its solutions are already used by hundred thousands developers in all industries. GitGuardian helps developers, cloud operation, security and compliance professionals secure software development, define and enforce policies consistently and globally across all their systems. GitGuardian solutions monitor public and private repositories in real-time, detect secrets and alert to allow investigation and quick remediation.

GitHub is the most trusted, secure, and scalable developer platform in the world. Join millions of developers and businesses who are creating the software that powers the world. Get the best tools, support and services to help you build with the most innovative communities in the world. There's a free option for managing multiple contributors: GitHub Team Open Source. We also have GitHub Sponsors that help you fund your work. The Pack is back. We have partnered to provide teachers and students free access to the most powerful developer tools for the school year. Work for a government-recognized nonprofit, association, or 501(c)(3)? Receive a discount Organization account through us.

Sourcegraph shows you the repositories that you use, stored in any code host or search across the open-source universe. With smart filters and Code Intelligence, you can quickly find answers with regular, structural, or literal expression searches. Extensions allow you to connect all your tools, including test coverage, 1-click file in editor, custom highlight, and information from other services. To help engineers learn unfamiliar code faster, create living documentation using Markdown and live query code. Use collaborative, shareable notebooks to navigate through your codebase and resolve issues. You can embed HTML in notebooks wherever you can, just like your internal documentation. This will allow you to spend less time updating outdated docs. To learn more about the code and repository structure, search across all code hosts.

Review Assistant is a plug-in that allows you to review code in Visual Studio. Our code review tool allows users to create review requests and then respond to them in Visual Studio. Devart's review assistant supports TFS, Subversion Git, Mercurial and Perforce. The setup includes a 30-day free trial and a plan. In 5 minutes, you can be up and running. Our product can be a great review tool to help you code flawlessly. Most developers don't like switching between IDEs while writing code. We have made code review as integrated as possible into the development environment. The code editor now allows you to create review comments. The Code Review Board window shows you created reviews and allows for you to manage them. The Code Review Board also contains all code-related discussions.

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.

Pull request reviews that are privacy-focused and contextual, with code suggestions for each line of code and an interactive chat that becomes smarter over time. The diff in the Pull Request is transformed into a summary that helps you understand the intention of the changes. Creates automated release note, which can be included in the release documentation. A detailed analysis of code changes, line-byline, provides precise and actionable recommendations ready to be committed. Ask the bot questions within your code lines. Provide more context and let it write the code. The more you interact with the bot, it will become smarter. Reduce cycle time by reducing the number of reviews and generating high-quality suggestions for code changes. Your data is kept confidential and used to fine-tune your reviews. The system refines the reviews based on your interactions.

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/

This tool is the ultimate tool to help Node.js programmers secure their custom code. Developers are 4x more likely fix bugs before code is checked-in. Reshift makes it easy to shift security. It detects security bugs and corrects them at compile time. Reshift is a security tool that integrates with your developers without slowing them down. Reshift integrates seamlessly with the developers' IDE, so security issues can be detected in real time and corrected before code is merged. Are you new to security? Reshift makes it simple to add code security to your pipeline for the very first time. This tool is for software companies that are growing and want to increase their security. Are you not a security expert? Reshift is designed for small businesses, so it's easy to set-up without any security expertise. Reshift offers rich content and best practices to help developers improve their code security.

Phabricator supports post commit auditing. It can be used as a primary workflow, or when combined with Herald, rule-based triggers can be used to get extra eyes on your code. You can plan features, track bugs, and give tokens. Maniphest allows you to customize input forms and use custom fields. It also has an API. Phriction is a documentation wiki that allows you to write down things and then revert them later. Workboards are easy to use with drag-and-drop. Conpherence makes it easy to keep track of where your team is eating lunch with just a few clicks. Keep track of your company's activity with Herald. This notifies you when something important happens (e.g., a file being modified). You can access most of Phabricator's functionality via the arcanist command-line tool. You can use the Conduit API to create scripts that interact over an HTTP JSON API with Phabricator.

DeepSource allows you to automatically identify and fix bugs in your code during code reviews. This includes security flaws, anti-patterns and bug risks. It takes less that 5 minutes to create your Bitbucket or GitLab account. It works with Python, Go, Ruby and JavaScript.

Automate your workflow and let Upsource analyze your code. You can then track the progress while you concentrate on making improvements. You can participate in discussions and manage your reviews from the comfort of your IDE. You can explore new features in the browser using IDE-like navigation. You can also reply to emails and never miss an important update. You can discuss changes, @mention others and respond to comments. As you discover new features and help other teammates, you unlock achievements. Easily integrate Upsource with issue trackers, CI servers and synchronize with GitHub. Upsource is not going to grow! Upsource can take care of any size team or number of projects. Upsource can provide you with a code review tool and insight into the history of your projects, as well as a place for you to collaborate or expand your developer skills.

A quick overview of the code quality for the entire project, the most problematic files, and recent commits. CodeFactor will track all new and resolved issues for each pull request and commit. CodeFactor will show you the most important issues first, based on file size, file change frequency, and issue code size. This allows you to focus your efforts on fixing what is most important. Track and create issues or comments from code files or project issue pages. CodeFactor can also update the status of Bitbucket or GitHub pull requests. CodeFactor lets you toggle inspection for any repository branch at will. CodeFactor integrates to Slack to send code quality notification for every commit in any branch or pull request. Go to the repository settings page to install. Straightforward pricing based upon private repository number. No hidden fees. Integration into your workflow is seamless.

Automate style feedback for all languages that you use and align your code reviews with your team. Just a few clicks and your repository is connected. Our reviews are completed in record time. You can use the default style guides, or modify each tool to suit your team's needs. Auto fixing allows you to correct style mistakes in your team so that you can give feedback. Stickler CI does not keep your code on our servers during a review. Your code is deleted from our servers after the review comments are posted. Each pull request will improve and standardize your code. Your coding standards should be applied consistently to code changes. This will ensure that your team is not disrupted. You can automatically apply style and quality checking tools to ensure that your code is consistent in style and quality. You can either use the defaults, or you can customize linters to meet your existing coding standards.

You can customize the code review rules sets to match your standards. You can focus on the important things by avoiding bugs that aren't important to you. Code reviews can be performed without worrying about security. Codegrip doesn't store any code during automated code reviews. Keep track of the progress of your project. You can receive pull request notifications and code quality reports in any Slack channel you choose. A dashboard view allows you to manage multiple projects from one place. With the help of simple-to-understand graphs and parameters, you can track the changes in code quality over time. OWASP is a consensus on the most important security risks for web and mobile apps. It provides guidance to developers and security professionals about the most common vulnerabilities found in web applications that are easy to exploit.

Collaboration with AI and each other is made easy without having to switch between tools. This reduces distractions and context switches. Pullflow synchronizes your user identities and code review activity across GitHub Slack and VS Code. This allows you to communicate naturally across platforms. Take action wherever you are and return to your flow. Pullflow integrates GitHub Actions, external CI/CD tools, GitHub apps and more to give you a single view on your pull request, from the draft stage to the test and deployment phase. Pullflow can take care of your quick actions with a simple chat mention or IDE shortcut. Request review, add/remove label, give feedback, accept, and more without a trip on GitHub.

StepSecurity is the platform for you if you use GitHub Actions to perform CI/CD. Implement network egress and CI/CD security for GitHub Actions runner. Discover CI/CD security risks and GitHub action misconfiguration. Automated pull requests can standardize GitHub Actions CI/CD as code files. Allowlists block egress traffic to prevent SolarWinds or Codecov CI/CD attacks. Instant contextualized insight in network and file events across all workflow runs. Control network egress with granular policies at the job level and default cluster-wide. Many GitHub Actions do not receive maintenance and are therefore risky. These Actions are forked by enterprises, but the ongoing maintenance is costly. StepSecurity can help enterprises reduce risk and save time by allowing them to delegate the review, forking and maintenance of Actions.

Get code reviews on-demand from experts, vetted by AI. Every time you open a Pull Request, senior engineers will be added to your team. AI-assisted code review will help you deliver better, more secure software faster. PullRequest can adapt to the needs of any development team, whether it's 5 or 5,000. Our reviewers help your team find security vulnerabilities, hidden bugs, and fix any performance issues before they are released. All of this can be done using your existing tools. AI analysis enhances the expertise of human reviewers to identify high-risk security areas. Intelligent static analysis using open source tools combined with proprietary AI. Shown to reviewers for greater insights. Save your senior staff time. While other members of your group are busy building, you can make meaningful progress in resolving problems and improving code.

DeepCode AI is the backbone of Snyk, and it's why it's also the fastest, most accurate SAST available. DeepCode AI, the AI powering Snyk, uses multiple AI models and is trained using security-specific data. It is then curated by top researchers to give all the benefits of AI without the drawbacks. DeepCode AI from Snyk was created to manage tech debt and find and fix vulnerabilities. It supports 11 languages and has multiple AI models. DeepCode AI is the engine behind Snyk’s one-click app coverage and security fixes. This allows developers to build quickly while remaining secure. DeepCode AI, our specialized AI, is built and refined using training data from open source projects. Never customer data. DeepCode AI uses a hybrid approach that combines multiple models and security-specific learning sets to secure applications.

Codeball is an AI code reviewer that grades pull requests from 0 (needs to be carefully reviewed) to 1. Codeball can be used to add labels that help you focus and auto-approve PRs. Codeball is easy to use and has a set of defaults that are logical. It can be customized to fit your workflow. Label PRs if you need to review them with caution. Keep your eyes open and don't allow bugs to slip through. Identifies, approves, or labels PRs that are safe. Save time by accelerating PRs that can be easily reviewed. GitHub Actions allows for full customization and programming. Codeball Actions consist of multiple smaller building block components that are highly configurable via GitHub Actions. Codeball uses a deep-learning model that was trained on more than 1 million Pull Requests. It considers hundreds inputs for each contribution. Codeball is optimized to be precise, so it only approves contributions it's confident in.

Metabob detects coding errors created by humans or AI, explains them, and fixes them. Metabob uses proprietary graph neural network to detect problems, and LLMs explain and resolve them. This combines the best of both worlds. GNN detects problematic code and classifies it with contextual understanding. Metabob's backend stores problematic code and context enriched with context. The backend stores the information and passes it to an integrated LLM. The LLM provides context-sensitive explanations and solutions to problems. Metabob's AI has been trained by millions of bug fixes made by experienced developers. Metabob's ability to understand context and code logic allows it to detect complex issues that span multiple codebases, and automatically generate solutions. Metabob's AI code reviews detect hundreds of logical issues, ranging from race conditions to unhandled edges cases. These problems are not detectable by static analysis tools.

Streamline Git commands to stack pull requests seamlessly from your terminal. Visually edit and create stacked pull requests without leaving the IDE. Keep track of all PRs and review requests in one inbox. Graphite AI's codebase aware feature provides immediate feedback and actionable suggestions on every pull request. Eliminate merge conflict and keep your main branches green, regardless of whether you have a team with 10 or 10,000 members. Accelerate the team with powerful real-time developer metrics. A faster and more intuitive Git interface designed to make stacking easy. Run gtcreate again to stack a new branch on top of the previous ones without waiting for them merge into the main. Gt sync will automatically sync your local changes with remote ones, and remove stale branches. Modify your stack to update changes. Graphite will handle all recursive rebasing. Create or update PRs on every branch of your stack using gt submit.

Deliver on time and on budget. RhodeCode allows you to code faster, test more, reduce bugs, and use best practices across your code base. Secure your assets and team behind-the firewall Our customers can share the same secure platform in defense, fintech, and other highly secure uses cases. You can leverage your investments and team better to deliver on your roadmap. You can unlock the value of legacy apps and teams that are being isolated from your new, agile projects. We have great support for SVN. You can get Git on a straight path, and continue to benefit from your SVN tools and apps for many years. Deliver outstanding results, faster. You can develop software in a collaborative environment that encourages innovation, drives projects forward, and allows you to track and better allocate developer resources. SCM solutions that are secure and highly efficient are required by large-scale global development teams. RhodeCode's mission it to exceed your expectations.

With syntax highlighting and colored distinctions, you can read both old and new files. To make the correct changes, discuss specific sections with others. Gerrit supports Git-enabled SSH/HTTPS servers that are compatible with all Git clients. Hosting multiple Git repositories together simplifies management. Schedule git gc to run on all managed repositories. Replicate to geographical mirrors for latency reduction. Back up servers for hot spare redundancy. Server-side plugins can be used to customize Gerrit Code Review. The project listing contains the source code for additional plugins.