Best Free Web App Development Platforms

Hostinger Horizons is a powerful vibe coding tool designed to accelerate the web app development lifecycle. Go from a simple text prompt to a fully functional web application in minutes, bypassing the complexities and delays of traditional coding. Built for rapid prototyping and MVP creation, Horizons allows you to instantly generate applications with integrated backend logic. It supports essential developer integrations, including Supabase for user authentication and databases, and Stripe for payment processing, allowing you to build and test real product cases instantly. It's the ultimate tool for developers and teams looking to launch faster.

Rapid development and cost-effective maintenance of web applications with server-side Java. The developer uses only this most widely used development language; no html, css or javascript knowledge is required for frontend programming. Unique clear separation of UI design and logical processing. Integration of Java business logic into the design through expression language and event control. Numerous and exceptional components serve a unique overall look; unlimited use of additional CSS or JavaScript on design side. Of course, the developed applications can also be hosted on Microsoft Azure or AWS (Amazon Web Services); the developed applications can also be used in-house with simple deployment. CaptainCasa Enterprise Client protects against hidden costs and provides long-term protection of your software development investment.

APEX is Oracle’s world’s most popular low-code application platform that enables you to build scalable, secure cloud, mobile or desktop apps, with world-class features, that can be deployed anywhere – whether in the cloud or on-premises. Using APEX, developers can quickly develop and deploy compelling apps that solve real problems and provide immediate value. You don’t need to be an expert in a vast array of technologies to deliver sophisticated solutions. Focus on solving the problem and let APEX take care of the rest.

Neptune Software's leading low-code app development platform - Neptune DXP – digitizes and optimizes business processes and user interfaces – at scale and with ease. Neptune DXP offers enterprise mobility, as well as the best low-code app development for SAP customers with the choice of no-code/low-code app development. The platform gives IT departments the right tools to build the apps they need. Neptune DXP provides a fast, cost-effective, and future-proof way to industrialize the development of custom applications (especially SAP Fiori, SAP mobile applications), turning your IT organization into an app factory, saving time and money on enterprise app development, app integration, and enterprise app operations.

sterlo is an Enterprise-grade low-code no-code platform that enables users to develop Web and Mobile apps in a code-free environment. Enabling custom application development for business process owners sterlo offers a wide range of features, including secure authentication, custom data connections, document management system, sterlo facilitates digital transformation that matters and changes the way apps are developed worldwide.

Joget offers an open-source, AI-powered platform that converges no-code/low-code development with AI to rapidly build and customize enterprise applications at scale. By combining AI with visual app builders—not raw code—Joget makes app generation faster, safer, and more accessible. With Generative AI and Agentic AI capabilities, Joget Intelligence enables organizations to automate and enhance processes while maintaining oversight and compliance. Unlike typical AI code generation, Joget's visual-first approach ensures applications are maintainable and governed within collaborative human workflows. As an Application and Integration Fabric, Joget connects legacy and modern systems seamlessly. Its extensible, open-source core and plugin architecture offer unmatched flexibility, and its White Label solution allows OEMs and digital solution providers to fully rebrand the platform. Trusted by startups, global enterprises, and government agencies across the globe.

Build and distribute any web application you can imagine. VIKTOR is the development platform for the engineering and construction industry. Empower your organisation to build and distribute scalable applications. Enter into a new era in engineering. Use our digital building blocks to rapidly create professional web-based applications and share them with everyone you want. VIKTOR is the most used application development platform in the engineering and construction industry. It enables engineers to quickly build their own software solutions and share them with everyone. Engineers and other domain experts know your business best. Create an agile organization by empowering them to adopt new technologies and rapidly create, test, distribute, and scale new software solutions according to their needs. This results in better solutions, high adoption rates, and lower development costs.

Build pixel-perfect, single-codebase applications for Mobile, Web and Desktop using C#, XAML and .NET. The first C# & XAML, free and open-source platform for creating true single-source, multi-platform applications. Reuse 99% of the business logic and UI layer across native mobile, web, and desktop. Maintain pixel-perfect control over where pixels go while having a choice of developing platform-specific or custom look and feel of your application. Familiarity and richness of C# and XAML combined with productivity boosts of hot reload, hot restart, edit and continue and more. Use familiar editors like Visual Studio, Visual Studio Code or Rider. Free and paid support is available by both community and our team. Chats, tickets or even screen sharing!

Build scalable Web and Mobile Apps fast and easy with Aptugo's visual interface. Have full control of your source code to access limitless possibilities. Aptugo empowers you to build any Web or Mobile App you can think of, faster and with proven quality standards. Aptugo has more than 100 components to drag & drop. They can be customized and reused endlessly. Developers can also create new ones, with their own DNA, to drag, drop and reuse within their library. Aptugo brings more than 100 elements already available to drag, drop & reuse. Users can create and add their own components. Components can be adapted to any programming language. Experienced developers can create and define elements with their own handcrafted code! It can be any element from the back or front-end: charts, maps, forms, a LinkedIn API connector, the sky is the limit.

As the name suggests, Hope UI is the revolutionary admin dashboard built with the developer's aspirations and needs in the first place. Hope UI Laravel Admin Dashboard Template and UI component set is designed with a modular component structure to help design and launch web applications in the fastest way possible. Being able to develop lightweight web applications and admin panels, Hope UI Admin Template comes with a Live Customizer to cut down on development time and coding hours. The Hope UI Bootstrap Admin Dashboard brings the future of admin UI to power your present and future development. Hope UI is available in 8 different technologies which are Bootstrap, Vue JS, React JS, Laravel, CodeIgniter, Figma, XD and Sketch UI Kit and more versions like Tailwind, Angular, React Native, etc are in the roadmap.

Avalonia UI enables developers to create multi-platform apps with .NET. Write once, and run everywhere. Save time and focus on your product. Considered a spiritual successor to WPF, Avalonia UI provides a familiar developer experience, allowing you to leverage years of pre-existing knowledge and investments. rusted by JetBrains as the best framework for modernizing their WPF-based tools, used by >170,000 companies, including 431 on the Fortune 500 list. Our developer community has grown enormously as Avalonia UI has grown in popularity. Join us and be welcomed into our supportive and vibrant community.

Wisej.NET provides a platform and set of tools designed to ease the burden of developing, testing, deploying, and maintaining complex AI-powered business software. It bridges the gap between traditional WinForms-style desktop applications and the web by empowering developers to leverage their existing .NET and C# or VB.NET) skills. Developers are able to use the tools they are familiar with, like a pixel-perfect design surface and drag-and-drop controls with the languages they are comfortable with (C# or VB.NET) to build real-time web applications without having to learn HTML, CSS, or JavaScript. They can stay in their favorite IDE like Visual Studio to take advantage of features like IntelliSense, integrated debugging, design surfaces and source control integration. Front-end developers can leverage their knowledge of web technologies to augment applications and seamlessly integrate third-party packages like HTML5 charting libraries and ASP.NET controls.