Best Free Application Modernization Software

Kissflow is an easy-to-use, low-code platform for custom application development tailored to business operations. Kissflow empowers process owners and IT developers to automate and build processes and applications for internal business operations. We help solve two main challenges in the enterprise: The first is the custom application backlog. Enterprise IT teams say “not now” to most custom application requests from business teams. While important to a department, they aren’t vital enough to engage limited IT bandwidth. Kissflow gives internal developers a hyper-fast platform to build various applications quickly. The second is starting a citizen development program. Process owners are scattered throughout the organization and need a standard, approved, and governed way to build automated applications that are a step up from spreadsheets. With its simple no-code design, patented rules engine, and comprehensive governance module,

Now everyone can quickly build and share low-code apps with Microsoft Power Apps. Increase agility across your organization by rapidly building low-code apps that modernize processes and solve tough challenges. Empower your team to start building and launching apps right away using pre-built templates, drag-and-drop simplicity, and quick deployment—then roll out continuous improvements as needed. Give everyone the power to build the apps they need with advanced functionality previously only available to professional developers—including pre-built AI components. Provide professional developers the tools to seamlessly extend app capabilities with Azure Functions and custom connectors to proprietary or on-premises systems. Connect your apps to hundreds of data sources using a library of more than 260 connectors and Common Data Service —bringing your data together for a single source of truth while you modernize processes as well as customize and extend Office 365, Dynamics 365 etc.

OutSystems is the number one low-code platform that is specifically designed to help users build and deliver better apps faster. Combining the power of low-code development with advanced mobile and enterprise integration capabilities, OutSystems enables users to visually develop and manage their entire application portfolio, stage interdependent apps and components, seamlessly integrate with existing systems, and streamline DevOps processes.

migVisor by EPAM is a first-of-its-kind cloud migration assessment product that helps companies analyze database environments and generate a visual cloud migration roadmap to accelerate database migration to the cloud. As companies embark on a digital transformation journey which includes application modernization and embracing cloud-native technologies, they look for ways to move out of traditional commercial databases and onto next-generation database technologies. The database aspects of building a cloud strategy are very complicated and usually require specific knowledge and expertise in re-factoring and re-platforming large monolithic source databases. The potential benefits of choosing the right migration strategy out of commercial databases is vast and includes reducing database license and IT costs, breaking vendor lock-in, adopting a modern cloud architecture and more.

Never let onboarding, knowledge silos, or context switching slow you down. Use Swimm to create and edit docs that are coupled with your code, auto-synced, and integrated into your workflow. Swimm's language agnostic editor, paired with its Smart Tokens and Snippet Studio is the foundation for modern documentation. Build great media-rich docs coupled with the code. Swimm's Auto-sync algorithm, helps your documentation stay in sync through refactoring and reorganization. You don't have to worry about changing file names, function names, or your implementation. Swimm will be able to keep up with it. Swimm checks your docs as your code evolves, and notifies you if your changes affect your documentation. Access docs right next to the code they refer to. Stay in your IDE and your flow. When you click on a link, your IDE will open a new tab with the documentation perfectly rendered from Markdown.

AWS App Mesh is a service mesh that provides application-level networking to facilitate communication between your services across various types of computing infrastructure. App Mesh offers comprehensive visibility and high availability for your applications. Modern applications are generally made up of multiple services. Each service can be developed using various types of compute infrastructure, such as Amazon EC2, Amazon ECS, Amazon EKS, and AWS Fargate. As the number of services within an application grows, it becomes difficult to pinpoint the exact location of errors, redirect traffic after errors, and safely implement code changes. Previously, this required creating monitoring and control logic directly in your code and redeploying your services every time there were changes.

Amazon Q Developer is a generative AI–powered coding assistant from AWS that helps developers accelerate the entire software development lifecycle. It integrates directly into popular IDEs like JetBrains, VS Code, Visual Studio, and Eclipse, providing real-time code suggestions, refactoring, documentation, and debugging assistance. Beyond coding, Amazon Q Developer supports agentic capabilities—autonomously performing tasks like feature implementation, testing, and modernization of applications. As an AWS-native expert, it helps optimize cloud resources, diagnose issues, and guide users through architectural best practices. The platform also enables seamless data and AI integration, allowing developers to build analytics and ML applications using natural language. With up to 80% faster development speed and 40% productivity gains, Amazon Q Developer delivers enterprise-grade intelligence directly inside the tools developers use every day.

Mendix, a Siemens business and the global leader in enterprise low-code, is fundamentally reinventing the way applications are delivered in the digital enterprise. With the Mendix platform, enterprises can ‘Make with More,’ by broadening their development capability to conquer the software development bottleneck; ‘Make it Smart,’ by making apps with rich native experiences that are intelligent, proactive, and contextual; and ‘Make at Scale,’ to modernize core systems and build large app portfolios. The Mendix platform is built to promote intense collaboration between business and IT teams and dramatically accelerate application development cycles while maintaining the highest security, quality, and governance, in short, to help enterprises leap into their digital futures. The Mendix platform has been adopted by more than 4,000 leading companies around the world including Conoco Phillips, Business Development Bank of Canada, Post NL, Continental, Zurich Insurance, and

Build fast now. Be ready for whatever comes next. No matter where you’re working, Pega makes teamwork easy with an intuitive, inclusive approach to app authoring. React quickly to changing needs by unifying users in one platform using low-code tools and developer-grade solutions. Foster innovation and manage low-code at scale across your organization from one comprehensive dashboard. Optimize efficiency by giving business users, developers, and IT what they need, when and where they need it. Accelerate application development by defining core app elements quickly and easily. Operationalize and manage low-code at scale across your organization from one comprehensive dashboard. Empower IT to ensure every app is created within organizational guardrails. Deliver app experiences that are relevant today – and ready to scale into the future. Pega’s UX framework is purpose-built for your developers, employees, and customers.