Best Free AI-Augmented Code Modernization Tools of 2026

With Microsoft Power Apps, everyone can now quickly create and share low-code applications. Rapidly build low-code apps to improve your organization's agility and solve difficult problems. Your team can build and launch apps immediately using pre-built templates. They can also be used for drag-and-drop simplicity and quick deployment. Then, roll out continuous improvements as necessary. Give everyone the power to build the apps they need with advanced functionality previously only available to professional developers--including pre-built AI components. Professional developers have the tools to seamlessly extend app capabilities using Azure Functions and custom connectors for proprietary or on-premises system. Connect your apps with hundreds of data sources using a collection of more than 260 connectors. The Common Data Service allows you to bring your data together as one source of truth. This will allow you to modernize processes and customize and extend Office 365, Dynamics 365, and other products.

Amazon Q Developer is an advanced AI assistant built for professional developers, combining coding intelligence with deep AWS expertise. It’s designed to handle every stage of development—from writing and refactoring code to performing upgrades and automating documentation. Integrated with major IDEs and the AWS Management Console, it empowers developers to code faster and operate smarter using secure, context-aware assistance. Its agentic automation can autonomously implement features, test applications, and perform large-scale migrations like .NET to Linux or Java 8 to Java 17 in minutes. Developers can chat directly with Amazon Q inside Slack, Microsoft Teams, GitHub, and GitLab, where it provides architectural recommendations and incident resolution guidance. The tool also supports CLI autocompletions and AWS resource management to streamline workflows from the terminal to the cloud. Offering enterprise-grade access controls and IAM integration, it ensures that organizational data and permissions remain protected. Available on the AWS Free Tier, Amazon Q Developer enables up to 50 monthly AI interactions and 1,000 lines of code transformation at no cost, helping teams start building smarter right away.

OutSystems stands out as the leading low-code platform tailored to assist users in creating and deploying superior applications more efficiently. By merging the efficiency of low-code development with robust mobile and enterprise integration features, OutSystems empowers users to visually design and oversee their complete application portfolio, coordinate interconnected applications and components, integrate smoothly with current systems, and enhance DevOps workflows. This holistic approach significantly accelerates the app development lifecycle, ensuring that businesses can respond swiftly to changing market demands.

Diffblue Cover analyzes Java programs and creates unit regression tests that accurately reflect the current behavior. The CLI tool is 100% self-configuring and can be used in your Gradle or Maven environment. The CLI tool automates the test-writing process and provides a speed boost to organizations working towards achieving DevOps goals such as CI/CD. The CLI tool fits in a CI pipeline and protects the entire codebase from regressions by shifting testing to the left. Diffblue Cover's unit tests for regression are fast and verify any code changes immediately. This allows users to detect unwanted changes in code behavior as soon as possible. Teams can save even more time by having tests automatically maintained.

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.

Blitzy is an innovative platform powered by artificial intelligence that aims to enhance the speed of enterprise software development by automating as much as 80% of the entire process. Employing a network of over 3,000 specialized AI agents, Blitzy is capable of thinking, planning, building, and validating code according to specified technical requirements. The platform can handle massive codebases of up to 100 million lines seamlessly, ensuring comprehensive awareness of projects and resolving issues related to fragmentation. Additionally, Blitzy's AI agents work together to create detailed technical documentation, outline changes in simple language, and generate high-quality, enterprise-level code at scale, capable of delivering as much as 3 million lines in a single execution, complete with integrated quality assurance measures. It is versatile enough to support both the development of new products and enhancements to existing ones, enabling users to easily link their code repositories, access the latest documentation, and implement additional features or code refactoring as needed. This robust functionality positions Blitzy as a transformative tool for organizations seeking to streamline their software development efforts.

Your mission-critical applications are the backbone of your business, but updating them shouldn't require a risky, ground-up rewrite. Rocket® Uniface™ provides a premier low code application development platform that empowers both expert developers and business users to build, upgrade, and modernize core systems rapidly. We help you deliver business value at the speed your users demand. By combining intuitive low-code tools with powerful automation, we enable your team to design and deploy resilient applications without disrupting daily operations. - Modernize mission-critical applications swiftly using advanced automation capabilities. - Empower technical and non-technical staff with an accessible low code development tool. - Future-proof your core systems with modern security, seamless integration, and a refreshed user experience. Build a bridge to tomorrow without leaving your reliable foundation behind. Partner with Rocket Software to transform your application development today.

IBM Bob serves as an AI-driven partner throughout the software development lifecycle, revolutionizing the way developers interact with actual codebases. Unlike typical autocomplete solutions, it empowers teams to evolve from merely seeking coding assistance to modernizing, securing, and scaling their applications. Bob enhances existing processes within the software development lifecycle, enabling users to confidently write, test, upgrade, refactor, debug, document, and secure their software. With Bob, developers can seamlessly convert natural language prompts into functional code, utilize both single-line and multi-line code completions, automatically clean and rectify existing code, inquire about specific codebases, streamline repetitive tasks, and generate new files or entire projects. It features specialized modes tailored for diverse tasks, such as Code mode for coding and modifications, Ask mode for clarifications, Plan mode for pre-implementation design, Advanced mode for handling intricate challenges, and Orchestrator mode for managing multi-step projects. By integrating these capabilities, Bob is not just a tool but a comprehensive assistant aimed at enhancing productivity and efficiency in software development.

Mendix, a Siemens company and global leader in enterprise low code, is fundamentally changing the way applications are delivered in a digital enterprise. The Mendix platform allows enterprises to 'Make with More' by increasing their development capabilities to overcome the software development bottleneck. 'Make it Smart' by creating apps with rich native experiences that can be intelligent, proactive and contextual. 'Make at Scale' is a way to modernize core systems and create large app portfolios. Mendix is designed to encourage intense collaboration between IT and business teams. It dramatically accelerates application development cycles while maintaining the highest quality, security, and governance. In short, it helps enterprises leap into their digital future. More than 4,000 top companies have adopted the Mendix platform, including Conoco Phillips and Business Development Bank of Canada. Post NL, Continental, Zurich Insurance and more.

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.

Act swiftly now and prepare for whatever lies ahead. Regardless of your work environment, Pega simplifies collaboration through a user-friendly and inclusive method of application development. Adapt promptly to evolving demands by integrating users on a single platform that utilizes low-code tools alongside developer-grade solutions. Encourage innovation and oversee low-code initiatives on a large scale within your organization through a single, all-encompassing dashboard. Enhance efficiency by providing business users, developers, and IT with the necessary resources exactly when and where they are needed. Speed up the creation of applications by swiftly and effortlessly defining essential app components. Manage and operationalize low-code solutions effectively across your organization with one unified dashboard. Equip IT teams to ensure that every application is developed within the organization's established guidelines. Offer application experiences that are relevant in the present while remaining poised for future scalability. Pega's user experience framework is specifically designed to cater to the needs of your developers, employees, and customers, ensuring a seamless interaction for all stakeholders involved. This approach not only fosters collaboration but also drives the overall success of your projects.