List of the Top 9 AI Code Refactoring Tools for IntelliJ IDEA in 2026

Junie, the AI coding agent by JetBrains, revolutionizes the way developers interact with their code by embedding intelligent assistance directly into JetBrains IDEs like WebStorm, RubyMine, and GoLand. Designed to fit naturally into developers’ existing workflows, Junie helps tackle both small and ambitious coding tasks by providing tailored execution plans and automated code generation. It combines the power of AI with IDE capabilities to perform code inspections, syntax checks, and run tests automatically, maintaining code quality without manual intervention. Junie offers two distinct modes: one for executing code tasks and another for interactive querying and planning, allowing developers to seamlessly collaborate with the agent. Its ability to comprehend code relationships and project logic enables it to propose efficient solutions and reduce time spent on debugging. Developers from various fields, including game development and web design, have showcased impressive projects built entirely or partly with Junie’s assistance. The tool supports multi-file edits and integrates version control system (VCS) assistance, making complex refactoring easier and safer. JetBrains offers multiple pricing plans tailored to individuals and organizations, ranging from free tiers to premium AI Ultimate for intensive daily use. By handling repetitive coding chores, Junie frees developers to focus on the creative and strategic aspects of software development. Overall, Junie stands as a powerful AI companion transforming traditional coding into a smarter, more collaborative experience.

GitHub Copilot is an AI-powered developer platform designed to enhance productivity across the entire software development workflow. It works directly within IDEs, terminals, and GitHub to assist with coding, debugging, and collaboration. Copilot offers intelligent code completion, explanations, refactoring, and real-time suggestions. Developers can leverage agent-based capabilities to let Copilot autonomously handle tasks like writing code, creating pull requests, and responding to feedback. The platform supports multiple industry-leading AI models, giving teams flexibility in performance and cost optimization. Copilot CLI brings AI assistance to the command line for complex, context-aware workflows. Teams can customize Copilot with organizational knowledge to ensure consistency and shared best practices. Enterprise-grade controls allow administrators to manage access, monitor usage, and enforce governance. Secure MCP integrations help organizations control how external tools connect to Copilot. Copilot scales easily from individual developers to large enterprises. It integrates seamlessly with existing GitHub workflows and tools. GitHub Copilot ultimately helps teams build better software faster with AI as a collaborative partner.

The JetBrains AI Assistant seamlessly combines your integrated development environment (IDE) with both custom and third-party large language models (LLMs) designed for various functions. This synergy enables the AI Assistant to provide precise and context-aware assistance, facilitating tasks such as code snippet generation, the completion of complex code structures, and the efficient creation of automated tests. We are dedicated to maintaining the security of your data and code! The JetBrains AI Assistant ensures that your code snippets are kept confidential, as they are not stored or shared, regardless of their source, whether from public repositories, private repositories, or local files. Upholding the JetBrains AI Terms of Service is crucial to our operations, guaranteeing that neither we nor our associated service providers use your data or code to train generative AI models. Furthermore, this unwavering commitment to privacy and data integrity cultivates a reliable atmosphere for developers, encouraging innovation and creativity in their projects. By prioritizing these principles, we aim to build lasting trust with our users.

GoCodeo serves as an all-encompassing AI platform tailored for developers, designed to expedite the processes of coding, testing, and debugging. By seamlessly integrating with VS Code, it delivers real-time support that ranges from generating code snippets to automatically producing unit tests. The platform’s AI-powered tools further enhance productivity by offering valuable debugging insights, allowing developers to swiftly pinpoint and resolve problems. With its compatibility across various programming languages and frameworks, GoCodeo enables developers to create high-quality, production-ready code with greater ease, optimizing development timelines and improving overall project efficiency. Ultimately, GoCodeo is a vital resource for developers seeking to elevate their coding experience and achieve faster results.

Amazon Q Developer is AWS’s most capable generative AI assistant for software development, engineered to enhance productivity across every phase of the build cycle. Available as a plugin for JetBrains, VS Code, Visual Studio, Eclipse, and the command line, it brings real-time code generation, debugging, and documentation directly into the developer’s workspace. Unlike simple autocomplete tools, its agentic capabilities allow it to autonomously complete complex tasks—implementing new features, performing code reviews, running tests, and upgrading legacy applications with minimal human input. It’s deeply integrated with the AWS ecosystem, offering expertise in cloud optimization, cost management, and operational diagnostics. Teams can engage Amazon Q in Slack, Microsoft Teams, GitHub, and GitLab for seamless collaboration, architecture guidance, and incident troubleshooting. The platform also supports data-driven development, helping users build analytics pipelines and machine learning workflows using natural language prompts. Its privacy-first design ensures that proprietary content is never used to train models, while AWS IAM-based access controls maintain enterprise security standards. Internal studies report up to 80% faster development speeds and a 37% acceptance rate for multi-line code suggestions—among the best in the industry. Whether upgrading Java apps, managing DevOps pipelines, or designing AI projects, Amazon Q Developer accelerates innovation while reducing friction. With flexible deployment and perpetual free access for limited use, it’s redefining the developer experience for the AI era.

Goose is an open-source AI agent designed to run locally on computers, aimed at automating various engineering tasks within a terminal or integrated development environment (IDE). It streamlines processes such as code generation, debugging, and deployment, allowing developers to concentrate on more complicated problem-solving endeavors. The adaptable framework of Goose enables customization with a range of large language models (LLMs) and the incorporation of external APIs, which enhances its capabilities to cater to the distinct needs of diverse projects. By autonomously handling complex tasks, Goose simplifies the development process, ultimately boosting productivity and reducing the necessity for manual oversight. Users have highlighted the effectiveness of Goose in automating tasks such as dependency management, test execution, and code migration, reflecting its value in real-world applications. Moreover, as software development continues to advance, tools like Goose are becoming essential for sustaining efficiency amid the demands of a rapidly changing environment. In an era where speed and precision are paramount, leveraging such innovative tools can significantly influence a team's success in delivering high-quality software products.

Refact.ai is a cutting-edge AI-driven assistant that seamlessly integrates with your IDE, delivering smart code completion, instant code suggestions, and automatic refactoring to optimize the coding experience. Leveraging an AI model tailored to your specific codebase, Refact.ai customizes its recommendations to align with your team's coding style, significantly boosting productivity. Developers have the flexibility to adjust the assistant's functionalities to cater to their individual needs, making it an invaluable resource for personalized coding support. Compatible with all major IDEs and offering secure on-premise deployment, Refact.ai not only enhances code quality but also minimizes the time spent on tedious manual tasks, leading to quicker project turnaround times. Ultimately, this innovative tool transforms the way developers approach coding, fostering a more efficient and enjoyable workflow.

Enhance the creation of robust and secure software by leveraging AI throughout all stages of the development lifecycle. GitLab Duo acts as an AI-powered ally intricately embedded within the GitLab framework, designed to elevate productivity and improve collaboration among software developers. It delivers intelligent code suggestions, assists with code refactoring and debugging, and streamlines processes by automating repetitive tasks. Moreover, GitLab Duo facilitates natural language queries concerning project management and development analytics, providing developers with a more user-friendly approach to interact with their code repositories. With compatibility with leading IDEs like JetBrains and Neovim, GitLab Duo ensures consistent support in the environments preferred by developers. By merging AI-enhanced productivity with GitLab's extensive DevSecOps functionalities, GitLab Duo equips teams to create exceptional software more swiftly while strengthening collaborative efforts. The introduction of this groundbreaking tool fundamentally changes the methodology teams utilize in software development, paving the way for more innovative practices and efficient workflows.

Fynix operates as an advanced AI-powered platform designed to boost the efficiency of software development by offering intelligent coding assistance and agent-based code evaluations. This innovative tool integrates effortlessly with popular IDEs, including VS Code, and boasts features such as context-aware autocomplete, the ability to input natural language for code corrections and translations, and automatic visual representations of code flow. With its Code Assistant capability, Fynix empowers developers to write cleaner and more efficient code at a faster rate, while the upcoming Code Quality Agent aims to enhance bug detection and maintain coding standards. Supporting multiple programming languages and frameworks, along with compatibility with tools like Jira, Fynix emerges as a versatile solution that promotes better coding practices and encourages team collaboration. As developers continuously seek to refine their skills and produce high-quality code, Fynix has established itself as a vital partner in the evolving realm of software development, ensuring that teams can work more effectively together. Ultimately, the platform represents a significant advancement in the tools available to developers striving for excellence in their craft.