Alternatives to Foundation
Compare Foundation alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to Foundation in 2026. Compare features, ratings, user reviews, pricing, and more from Foundation competitors and alternatives in order to make an informed decision for your business.
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1
C++Builder
Embarcadero
C++Builder is a fast, integrated design and development suite for modern apps. Are you ready to design the best UIs of your life? Our award winning VCL framework for Windows and FireMonkey (FMX) visual framework for cross-platform UIs provide you with the foundation for intuitive, beautiful user interfaces that wow on every platform: Windows, macOS, iOS, and Android. Design your master UI layout once, then easily customize platform- and device-specific views without duplication of design effort. Drag-and-drop visual and non-visual components from the palette using our visual designer. Visually connect user interface elements to data sources using the LiveBindings Designer. Real-time design validation using Live On-Device Preview to broadcast the active form to multiple devices simultaneously. Add responsive design with resolution-aware components for desktop, tablets, and smartphones. Real, platform-specific native controls for an improved user experience. -
2
getcss
getcss
getcss - An intuitive CSS framework. Create responsive web apps with getcss. It's simple, easy to use, free, and open source. Features: * Accelerate your development - Write less, get more * Zero dependencies * Latest technologies - Supports latest browsers, HTML5, CSS3 * Easy to learn, easy to use - as easy as 1-2-3 * Free and Open Source - Develop for yourself or your client * Responsive User Interface - Developed with mobile first approach * Media queries and Flexbox based.Starting Price: Free -
3
Nue
Nue JS
Nue is a minimalist, standards-based web development environment and framework that emphasizes progressive enhancement, separation of concerns, and semantic web design to simplify building modern websites and web applications. It combines a static site generator with support for both multi-page and single-page applications, enabling developers to use extended Markdown, HTML first UI assembly, URL-first state management, and modern CSS for layout and styling while keeping markup clean and optimized for accessibility and SEO. Its entire ecosystem is extremely small in size (about 1MB) yet offers features like universal hot reload, SPA development, dynamic islands, view transitions, content collections, TypeScript support, CSS inlining, API routing, and full-stack previews without heavy tooling or complex configuration. Nue separates content, layout, and logic so designers, content strategists, and developers can work independently. -
4
Codeply
Codeply
Codeply is the HTML/CSS/JS editor that makes frontend design & development easier by enabling you to leverage the frameworks of your choice. Codeply is integrated with popular frameworks like Bootstrap, Foundation, Vue and Angular. This unique functionality makes it possible to quickly learn, prototype, test and build for any framework. Trawling through docs? What a hassle. Useful code examples are integrated with Codeply. Grab standard markup, snippets, templates & themes right from the editor. No more searching for libraries on CDN or example snippets. Figuring out which markup or CSS classes to use becomes easier. Designing layouts & mockups becomes faster. Codeply includes more than 50 popular libraries, APIs, plugins and frameworks. Additionally, Codeply is supported by a community of developers that are implementing code, and facing the same challenges along the way. This is not a CSS art gallery. Leverage over 40,000 real world examples, snippets, & starter templates. -
5
Windows Presentation Foundation (WPF)
Microsoft Learning
Windows Presentation Foundation (WPF) is a Windows-only user interface framework in .NET that uses a resolution-independent, vector-based rendering engine to take advantage of modern graphics hardware and enable visually rich desktop applications with features such as XAML markup, a comprehensive control set, data binding, layout, 2D/3D graphics, animation, styles, templates, documents, media, text, and typography, and the ability to incorporate other .NET APIs. WPF exists as a subset of .NET types in the System.Windows namespace and supports familiar programming constructs like instantiating classes, setting properties, calling methods, handling events, plus enhanced constructs such as dependency properties and routed events. Developers build UIs declaratively with XAML and implement behavior in code-behind, simplifying separation of interface and logic while supporting globalization and collaboration between designers and coders. -
6
Fastify
Fastify
An efficient server implies a lower cost of the infrastructure, a better responsiveness under load and happy users. How can you efficiently handle the resources of your server, knowing that you are serving the highest number of requests possible, without sacrificing security validations and handy development? Enter Fastify. Fastify is a web framework highly focused on providing the best developer experience with the least overhead and powerful plugin architecture, inspired by Hapi and Express. As far as we know, it is one of the fastest web frameworks in town. -
7
Laravel
Laravel
Laravel is a web application framework with expressive, elegant syntax. We’ve already laid the foundation — freeing you to create without sweating the small things. We love clean code just as much as you do. Simple, elegant syntax puts amazing functionality at your fingertips. Every feature has been thoughtfully considered to provide a wonderful developer experience. Dispatch background jobs to perform slow tasks like sending emails and generating reports while maintaining blazing fast response times. Stop sweating authentication. Laravel provides scaffolding for secure, session-based authentication, while Laravel Sanctum provides painless authentication for APIs and mobile applications. Laravel is committed to delivering the best testing experience you can imagine. No more brittle tests that are a nightmare to maintain. Beautiful testing APIs, database seeding, and painless browser testing let you ship with confidence.Starting Price: Free -
8
jQuery Mobile
OpenJS Foundation
jQuery Mobile is an HTML5-based user interface system designed to make responsive websites and apps that are accessible on all smartphones, tablets, and desktop devices. jQuery Mobile framework takes the "write less, do more" mantra to the next level: Instead of writing unique applications for each mobile device or OS, the jQuery mobile framework allows you to design a single highly-branded responsive website or application that will work on all popular smartphone, tablet, and desktop platforms. We believe that your website or app should feel like your brand, not any particular OS. To make building highly customized themes easy, we've created ThemeRoller for mobile to make it easy to drag and drop colors and download a custom theme. For polished visuals without the bloat, we leverage CSS3 properties. We recommend using our tool to build a custom bundle that contains only the components you need.Starting Price: Free -
9
Electron
Electron
Thousands of organizations spanning all industries use Electron to build cross-platform software. Build cross-platform desktop apps with JavaScript, HTML, and CSS. If you can build a website, you can build a desktop app. Electron is a framework for creating native applications with web technologies like JavaScript, HTML, and CSS. It takes care of the hard parts so you can focus on the core of your application. Electron uses Chromium and Node.js so you can build your app with HTML, CSS, and JavaScript. Electron is an open-source project maintained by the OpenJS Foundation and an active community of contributors. Compatible with Mac, Windows, and Linux, Electron apps build and run on three platforms. To get started with Electron, check out the resources available. Learn how to wrap your web app with Electron, access all the APIs, and generate installers. Also, Electron Fiddle lets you create and play with small Electron experiments.Starting Price: Free -
10
asyncio
asyncio
asyncio is used as a foundation for multiple Python asynchronous frameworks that provide high-performance network and web-servers, database connection libraries, distributed task queues, etc. asyncio is often a perfect fit for IO-bound and high-level structured network code. -
11
Spring Framework
Spring
Spring makes programming Java quicker, easier, and safer for everybody. Spring’s focus on speed, simplicity, and productivity has made it the world's most popular Java framework. Spring’s flexible libraries are trusted by developers all over the world. Spring delivers delightful experiences to millions of end-users every day—whether that’s streaming TV, online shopping, or countless other innovative solutions. Spring’s flexible and comprehensive set of extensions and third-party libraries let developers build almost any application imaginable. At its core, Spring Framework’s Inversion of Control (IoC) and Dependency Injection (DI) features provide the foundation for a wide-ranging set of features and functionality. Whether you’re building secure, reactive, cloud-based microservices for the web, or complex streaming data flows for the enterprise, Spring has the tools to help.Starting Price: Free -
12
Wasp
Wasp, Inc.
Wasp is a full-stack web application framework that allows developers to build apps faster with less boilerplate code. It integrates React for frontend development, Node.js for backend, and Prisma for database management, enabling developers to focus on the essential parts of their app. The framework’s declarative syntax and simplified configuration mean that developers can describe their app's high-level structure in a .wasp file, and the system automatically handles much of the repetitive work, including routing, authentication, and API management. Wasp's goal is to simplify app development without sacrificing flexibility, making it ideal for building MVPs and production-ready applications.Starting Price: Free -
13
Mono
Mono
Cross-platform, open source .NET framework. Sponsored by Microsoft, Mono is an open-source implementation of Microsoft's .NET Framework as part of the .NET Foundation and based on the ECMA standards for C# and the common language runtime. A growing family of solutions and an active and enthusiastic contributing community is helping position Mono to become the leading choice for the development of cross-platform applications. The latest Mono release is waiting for you. We cover everything you need to know, from configuring Mono to how the internals are implemented. Our documentation is open source too, so you can help us improve it. As an open-source project, we love getting contributions from the community. File a bug report, add new code or chat with the developers. Mono is a software platform designed to allow developers to easily create cross-platform applications.Starting Price: Free -
14
Semantic UI
Semantic
Semantic UI treats words and classes as exchangeable concepts. Classes use syntax from natural languages like noun/modifier relationships, word order, and plurality to link concepts intuitively. Semantic uses simple phrases called behaviors that trigger functionality. Any arbitrary decision in a component is included as a setting that developers can modify. Performance logging lets you track down bottlenecks without digging through stack traces. Semantic comes equipped with an intuitive inheritance system and high level theming variables that let you have complete design freedom. Definitions aren't limited to just buttons on a page. Semantic's components allow several distinct types of definitions: elements, collections, views, modules and behaviors which cover the gamut of interface design. -
15
Vue.js
Vue.js
Builds on top of standard HTML, CSS and JavaScript with intuitive API and world-class documentation. Truly reactive, compiler-optimized rendering system that rarely requires manual optimization. A rich, incrementally adoptable ecosystem that scales between a library and a full-featured framework. Vue is a JavaScript framework for building user interfaces. It builds on top of standard HTML, CSS and JavaScript, and provides a declarative and component-based programming model that helps you efficiently develop user interfaces, be it simple or complex. Vue extends standard HTML with a template syntax that allows us to declaratively describe HTML output based on JavaScript state. Vue automatically tracks JavaScript state changes and efficiently updates the DOM when changes happen. Vue is a framework and ecosystem that covers most of the common features needed in frontend development. -
16
Koa
Koa
Koa is a new web framework designed by the team behind Express, which aims to be a smaller, more expressive, and more robust foundation for web applications and APIs. By leveraging async functions, Koa allows you to ditch callbacks and greatly increase error handling. Koa does not bundle any middleware within its core, and it provides an elegant suite of methods that make writing servers fast and enjoyable. A Koa application is an object containing an array of middleware functions that are composed and executed in a stack-like manner upon request. Koa is similar to many other middleware systems that you may have encountered such as Ruby's Rack, Connect, and so on - however, a key design decision was made to provide high-level "sugar" at the otherwise low-level middleware layer. This improves interoperability, and robustness, and makes writing middleware much more enjoyable.Starting Price: Free -
17
Fat-Free Framework
Fat-Free Framework
Speed up your development process. F3 is lightweight, easy-to-use, and fast. Most of all, it doesn't get in your way. It has a gentle learning curve so you save money on training expenses. Whether you're a novice or an expert PHP programmer, F3 will get you up and running in no time. No unnecessary and painstaking installation procedures and no complex configuration are required. A powerful yet easy-to-use PHP micro-framework designed to help you build dynamic and robust web applications. Full-featured toolkit, super lightweight code base with just ~90kb, and easy to learn. Take advantage of the built-in features. Develop apps that really rock. F3 gives you a solid foundation, a mature code base, and a no-nonsense approach to writing web applications. Under the hood is an easy-to-use web development tool kit, high-performance URL routing, a multi-protocol cache engine, built-in code highlighting, and support for multilingual i18n applications.Starting Price: Free -
18
Helidon
Helidon
Helidon is a cloud-native, open‑source set of Java libraries for writing microservices that run on a fast web core powered by Netty. Helidon Níma is the first Java microservices framework based on virtual threads. Helidon is designed to be simple to use, with tooling and examples to get you going quickly. Since Helidon is simply a collection of Java libraries running on a fast Netty core, there is no extra overhead or bloat. Helidon supports MicroProfile and provides familiar APIs like JAX-RS, CDI, and JSON-P/B. Our implementation runs on our fast Helidon Reactive WebServer. Helidon Reactive WebServer provides a modern functional programming model and runs on top of Netty. Lightweight, flexible, and reactive, the Helidon WebServer provides a simple-to-use and fast foundation for your microservices. With support for health checks, metrics, tracing, and fault tolerance, Helidon has what you need to write cloud-ready applications that integrate with Prometheus, Jaeger/Zipkin, etc.Starting Price: Free -
19
restify
restify
A Node.js web service framework optimized for building semantically correct RESTful web services ready for production use at scale. restify optimizes for introspection and performance and is used in some of the largest Node.js deployments on Earth. Running at scale requires tracing problems back to their origin by separating noise from the signal. restify is built from the ground up with post-mortem debugging in mind. Staying true to the spec is one of the foremost goals of the project. You will see references to RFCs littered throughout GitHub issues and the codebase. restify is used by some of the industry's most respected companies to power some of the largest deployments of Node.js on planet Earth—the future of Node.js REST development. Setting up a server is quick and easy. Like many other Node. js-based REST frameworks, restify leverages a Sinatra-style syntax for defining routes and the function handlers that service those routes.Starting Price: Free -
20
Inertia
Inertia
Inertia.js is a framework that enables developers to build modern single-page applications using classic server-side routing and controllers. It allows for the creation of fully client-side rendered SPAs without the complexity typically associated with such applications. Inertia.js operates without client-side routing or the need for an API, allowing developers to build controllers and page views as usual. It functions as a connector between server-side frameworks and modern frontend frameworks, offering official client-side adapters for React, Vue, and Svelte, and server-side adapters for Laravel, Rails, and Phoenix. This approach enables the development of modern SPAs while leveraging existing server-side patterns. Inertia isn't a replacement for your existing server-side or client-side frameworks. Rather, it's designed to work with them. Think of Inertia as the glue that connects the two. Inertia does this via adapters. -
21
Livewire
Laravel
Livewire is a full-stack framework for Laravel that simplifies building dynamic interfaces without leaving the comfort of Laravel. It allows developers to create modern, reactive web applications using Laravel's Blade templating engine, eliminating the need for a separate frontend framework. Livewire components can communicate with each other through a global event system, enabling seamless interaction between components on the same page. The framework supports features like data binding, validation, and lifecycle hooks, facilitating the development of complex, dynamic interfaces. By handling frontend interactions on the server side, Livewire reduces the complexity of building dynamic UIs, allowing developers to focus on application logic without extensive JavaScript. Livewire renders the initial component output with the page. This way, it's SEO-friendly. When an interaction occurs, Livewire makes an AJAX request to the server with the updated data. -
22
Astro
Astro Framework
Astro is the all-in-one web framework designed for speed. Pull your content from anywhere and deploy it everywhere, all powered by your favorite UI components and libraries. Astro optimizes your website as no other framework can. Leverage Astro's unique zero-JS frontend architecture to unlock higher conversion rates with better SEO. Astro was designed for your content. Fetch data from any CMS or work locally with type-safe Markdown and MDX APIs. Build personal and professional blogs with Astro's built-in Markdown support and content APIs. Stand out from the crowd with a lightning-fast site that ranks higher in SEO. Agencies use Astro to build fast websites, faster. Customize every site with full control over your frontend code. Time is money. Give your customers a better shopping experience and grow your business faster. Put your best foot forward with a portfolio that performs. Help people get to know you (and your work) faster.Starting Price: Free -
23
Axon Framework
AxonIQ
Purpose-built and open source, Axon Framework provides the building blocks for modern applications using event-driven architecture (EDA) powered by domain-driven design (DDD), event sourcing, and command query responsibility separation (CQRS). Our proven technology allows your team to evolve your application to reach business demands without unnecessary complexity.Starting Price: FREE -
24
Echo
Echo
High-performance, extensible, minimalist Go web framework. Highly optimized HTTP router with zero dynamic memory allocation which smartly prioritizes routes. Build robust and scalable RESTful API, easily organized into groups. Automatically install TLS certificates from Let's Encrypt. HTTP/2 support improves speed and provides a better user experience. Many built-in middleware to use, or define your own. Middleware can be set at root, group, or route level. Data binding for HTTP request payload, including JSON, XML or form data. API to send a variety of HTTP responses, including JSON, XML, HTML, file, attachment, inline, stream, or blob. Template rendering using any template engine. Customized central HTTP error handling. Easily extendable API. Optimized HTTP router which smartly prioritizes routes. Build robust and scalable RESTful APIs. Extensible middleware framework. Define middleware at root, group, or route level Data binding for JSON, XML, and form payload.Starting Price: Free -
25
TranslateGemma
Google
TranslateGemma is a new suite of open machine translation models from Google built on the Gemma 3 foundation that lets people and systems communicate across 55 languages with high-quality AI translation while maintaining efficiency and broad deployment flexibility. Available in 4 B, 12 B, and 27 B parameter sizes, TranslateGemma distills advanced multilingual capabilities into compact models that can run on mobile devices, consumer laptops, local machines, or cloud hardware without sacrificing accuracy or performance; technical evaluations show the 12 B version can outperform larger baseline models with lower compute demands. The models were developed through a specialized two-stage fine-tuning process combining high-quality human and synthetic translation data with reinforcement learning to optimize translation quality across diverse language families.Starting Price: Free -
26
Lit
Lit
Building on top of the Web Components standards, Lit adds just what you need to be happy and productive: reactivity, declarative templates and a handful of thoughtful features to reduce boilerplate and make your job easier. Every Lit feature is carefully designed with web platform evolution in mind. Weighing in at around 5 KB (minified and compressed), Lit helps keep your bundle size small and your loading time short. And rendering is blazing fast, because Lit touches only the dynamic parts of your UI when updating — no need to rebuild a virtual tree and diff it with the DOM. Every Lit component is a native web component, with the superpower of interoperability. Web components work anywhere you use HTML, with any framework or none at all. This makes Lit ideal for building shareable components, design systems, or maintainable, future-ready sites and apps.Starting Price: Free -
27
Litestar
Litestar
Everything that's needed to build modern APIs, from data serialization and validation to websockets, ORM integration, session management, authentication and more. Litestar puts great emphasis on developer experience and performance: It's one of the fastest ASGI frameworks and developing with it is just as fast. Asynchronous at heart, but with synchronous execution not as a second class citizen: Synchronous applications run without performance penalties. Interfaces for various key/value stores that seamlessly integrate with your application and third party extensions. Response caching with minimal configuration and overhead to speed up response times. Response caching with minimal configuration and overhead to speed up response times. Session and JWT based authentication and utilities at your disposal to start building your authentication layer with ease. -
28
CodeIgniter
CodeIgniter
CodeIgniter is an Application Development Framework - a toolkit - for people who build web sites using PHP. Its goal is to enable you to develop projects much faster than you could if you were writing code from scratch, by providing a rich set of libraries for commonly needed tasks, as well as a simple interface and logical structure to access these libraries. CodeIgniter lets you creatively focus on your project by minimizing the amount of code needed for a given task. Where possible, CodeIgniter has been kept as flexible as possible, allowing you to work in the way you want, not being forced into working any certain way. The framework can have core parts easily extended or completely replaced to make the system work the way you need it to. In short, CodeIgniter is the malleable framework that tries to provide the tools you need while staying out of the way. -
29
MōBrowser
TeamDev
MōBrowser is a framework for building native cross-platform desktop applications with HTML, CSS, and TypeScript. MōBrowser is based on Chromium and Node.js and provides built-in source code protection. It is free for non-commercial use, while commercial users receive technical support with SLAs directly from the framework engineers. -
30
UIkit
UIkit
Create websites on the fly with the drag and drop page builder. It generates perfect UIkit markup, tailored for your needs. Customize every aspect of UIkit visually, build and arrange your content, all in one comprehensive and intuitive interface. Build pages with ready-to-use elements made from UIkit components, like buttons, cards, accordions and much more. Modify the visual appearance of your site – including colors, fonts, margins and other style-related properties – with a sophisticated style customizer for UIkit.Starting Price: Free -
31
Svelte Native
Svelte Native
Svelte Native is a mobile application framework powered by Svelte, build mobile apps using the friendly web framework you already know. Build cross-platform, native iOS and Android apps without web views. Get truly native UI and performance while sharing skills and code with the web. Use the full power of Svelte including transitions, stores, and reactivity. One of the smoothest development experiences available for mobile. Svelte Native is a new approach to building mobile applications using NativeScript. Where other JavaScript mobile development frameworks like React Native and NativeScript-Vue do the bulk of their work on the mobile device, Svelte Native shifts that work into a compile step that happens when you build your app. Instead of using techniques like virtual DOM diffing, Svelte writes code that surgically updates the native view widgets when the state of your app changes.Starting Price: Free -
32
NiceGUI
NiceGUI
NiceGUI is an open source Python library that enables developers to create web-based graphical user interfaces (GUIs) using only Python code. It provides a gentle learning curve while still offering the option for advanced customizations. NiceGUI follows a backend-first philosophy: it handles all the web development details, allowing developers to focus on writing Python code. This makes it ideal for a wide range of projects, including short scripts, dashboards, robotics projects, IoT solutions, smart home automation, and machine learning. The framework is built on FastAPI for backend operations, Vue.js for frontend interaction, and Tailwind CSS for styling. Developers can create buttons, dialogs, Markdown, 3D scenes, plots, and more, all within a Python environment. NiceGUI supports real-time interactivity through WebSocket connections, enabling instant updates in the browser without page reloads. It offers a variety of components and layout options, such as rows, columns, etc.Starting Price: Free -
33
Rio
Rio
Rio is an open source Python framework that enables developers to build modern web and desktop applications entirely in Python. Inspired by frameworks like React and Flutter, Rio introduces a declarative UI model where components are defined as Python data classes with a build() method, allowing for reactive state management and seamless UI updates. It includes over 50 built-in components adhering to Google's Material Design, facilitating the creation of professional-grade interfaces. Rio's layout system is Pythonic and intuitive, calculating each component's natural size before distributing available space, eliminating the need for traditional CSS. Developers can run applications locally or in the browser with the backend powered by FastAPI and communication handled via WebSockets.Starting Price: Free -
34
Kaizen Framework
Virtual Splat Software
Kaizen Framework is a low code, rapid application development tool. You can make web application in minutes. It will help you to cut development cost and dependency on developers. No need to write code, no compilation need, no downtime to users. And finally, as the name says "Kaizen", we are constantly updating the framework to make sure that YOU make more money in software development projects. Among many other low-code frameworks, Kaizen is a mature framework that has proven its strength by delivering a variety of applications for different industries. It's constantly evolving for the last 15+ years, with projects already being delivered in 70+ industries with around 500+ projects successfully executed, and very practical solutions. Also, it's easy to learn and deploy and you can host the application wherever you want. The kaizen framework has advanced features compared to other frameworks.Starting Price: $10 USD per user per day -
35
CherryPy
CherryPy
CherryPy allows developers to build web applications in much the same way they would build any other object-oriented Python program. This results in smaller source code developed in less time. CherryPy is now more than ten years old, and it has proven to be fast and reliable. It is being used in production by many sites, from the simplest to the most demanding. In order to make the most of CherryPy, you should start with the tutorials that will lead you through the most common aspects of the framework. Once done, you will probably want to browse through the basics and advanced sections that will demonstrate how to implement certain operations. Finally, you will want to carefully read the configuration and extend sections that go in-depth regarding the powerful features provided by the framework. -
36
Framework7
Framework7
Framework7 is a free and open-source framework to develop mobile, desktop, or web apps with a native look and feel. It is also an indispensable prototyping tool to show a working app prototype as soon as possible in case you need to. With such a stunning set of UI components that Framework7 provides right from the box, it allows to create web apps, progressive web apps (PWA), and iOS and Android apps with a native look and feel. Framework7 paired with extra tools like Electron and NW.js allows to build native desktop apps. You can use any tools you love when working with Framework7. It doesn’t force you to use anything except plain HTML, CSS, and JavaScript. Creating apps with Framework7 is easy as creating a website. And in addition to vanilla JavaScript library, Framework7 comes with Vue.js, React, and Svelte components to bring components-syntax, structured data, and data bindings with the power and simplicity of Vue.js, React, or Svelte.Starting Price: Free -
37
Kendo UI
Progress Software
Kendo UI is the ultimate collection of JavaScript UI components with libraries for jQuery, Angular, React, and Vue. Quickly build eye-catching, high-performance, responsive web applications—regardless of your JavaScript framework choice. Easily add advanced JavaScript components into your existing or new designs. Kendo UI’s hundreds of components handle everything you need to satisfy your users’ requirements. Add advanced components such as data grids, charts, schedulers, and calendars with just a few lines of code. Each is crafted for performance and customizability. Switching frameworks and starting new projects won’t require a new license or a big learning curve. Everything is included and up-to-date, APIs are consistent and theming is easy. Our QA process coupled with world-class support teams and a large user community means that our components will always work the way they’re supposed to—guaranteed.Starting Price: $899 -
38
Tachyons
Tachyons
Create fast loading, highly readable, and 100% responsive interfaces with as little CSS as possible. Tachyons has several methods and workflows for customization. We offer an API so you can get a custom CSS build with generated documentation. Both Theme-ui and Styled-system implementations are easy to customize in theme.js. We've built a GUI for generating and customizing Tachyons builds that you can copy paste into your projects. Everything should be 100% responsive. Your website should work regardless of a user’s device or screensize. No matter the lighting, or the device, font-sizes should be large enough and contrast should be high enough for your users to easily read your content. Tachyons isn’t just a monolithic framework. It’s a collection of small modules that can be mixed and matched or used independently. Clear documentation helps create a shared understanding of design patterns amongst your team. -
39
Hermes 4
Nous Research
Hermes 4 is the latest evolution in Nous Research’s line of neutrally aligned, steerable foundational models, featuring novel hybrid reasoners that can dynamically shift between expressive, creative responses and efficient, standard replies based on user prompts. The model is designed to respond to system and user instructions, rather than adhering to any corporate ethics framework, producing interactions that feel more humanistic, less lecturing or sycophantic, and encouraging roleplay and creativity. By incorporating a special tag in prompts, users can trigger deeper, internally token-intensive reasoning when tackling complex problems, while retaining prompt efficiency when such depth isn't required. Trained on a dataset 50 times larger than that of Hermes 3, much of which was synthetically generated using Atropos, Hermes 4 shows significant performance improvements.Starting Price: Free -
40
.NET MAUI
Microsoft
.NET Multi-platform App UI (.NET MAUI) is a framework for building modern, multi-platform, natively compiled iOS, Android, macOS, and Windows apps using C# and XAML in a single codebase. .NET MAUI uses the latest, modern technologies for building native apps on Android, iOS, macOS, and Windows abstracting them into one common framework built on .NET 6. Native apps look and feel like the operating system on which they belong by default and layouts are fully adapted to each device automatically with no additional code. Platform APIs are available directly from C# to access over 60 platform features from a single cross-platform API including access to things like isolated storage, sensors, geolocation, camera, and a whole lot more with no compromises.Starting Price: Free -
41
Vaadin
Vaadin
Vaadin is a web app development platform for Java. It helps you build reliable web apps with great UX faster than before. Building an enterprise web app involves a lot of moving pieces. Vaadin simplifies the process with an integrated web app development platform for Java backends. Vaadin comes with all the components, frameworks, and tools you need to build a reliable, secure, app with great UX. Research shows that good user experience (UX) increases employee engagement, helps digital transformations to succeed, and avoids costly mistakes. The Vaadin Design System provides UI components and UX patterns that help you build consistently good user experiences in every app. Better yet, you can use it to build a custom design system for your organization. Vaadin comes with 45+ UI components that help you build consistent UIs fast. The theme can be customized to match your brand. Vaadin components work with screen readers and assistive devices.Starting Price: $139 per month -
42
Feathers
Feathers
Feathers can interact with any backend technology, supports many databases out of the box and works with any frontend technology like React, VueJS, Angular, React Native, Android or iOS. Build prototypes in minutes and production-ready apps in days. Leveraging a unique architecture, Feathers lets you focus on building your APIs and real-time applications quickly. You automatically get scalable HTTP and real-time APIs and stay prepared for whatever else the future might bring. Feathers can be used with NodeJS, in the browser, with React Native or with any other API client. You can use any database with many supports out of the box and connect your API seamlessly to any frontend framework. Built for TypeScript, Feathers provides the structure to create complex applications but is flexible enough to not be in the way. With a large ecosystem of plugins you can include exactly what you need. -
43
Solara
Widgetti BV
Many Python frameworks can handle basic dashboards but falter with complex ones, often leading teams to split into frontend and backend roles, causing various challenges. Solara is a new web framework that integrates ReactJS principles with Python simplicity. It offers a flexible API for various UI complexities and efficient state management. Solara supports a range of applications, from prototypes to intricate dashboards, and is compatible with platforms like Jupyter, Voilà, and various web servers. It emphasizes code quality, developer accessibility, and robust testing. -
44
Amazon Titan
Amazon
Amazon Titan is a series of advanced foundation models (FMs) from AWS, designed to enhance generative AI applications with high performance and flexibility. Built on AWS's 25 years of AI and machine learning experience, Titan models support a range of use cases such as text generation, summarization, semantic search, and image generation. Titan models are optimized for responsible AI use, incorporating built-in safety features and fine-tuning capabilities. They can be customized with your own data through Retrieval Augmented Generation (RAG) to improve accuracy and relevance, making them ideal for both general-purpose and specialized AI tasks. -
45
Luigi
Luigi
Luigi is an enterprise-ready micro-frontend framework designed to help developers build modular, extensible, scalable, and consistent user interfaces and web applications. It enables the decomposition of monolithic web applications into clear UI modules that reflect their underlying backend modularity, promoting a unified user experience in distributed development environments. Luigi is technology-agnostic, allowing seamless integration of UI modules from external systems and facilitating the extension of applications with additional functionalities from customers or third-party vendors in a secure manner. This approach allows the division and distribution of end-to-end feature development across multiple teams, enabling them to independently and rapidly develop, deploy, maintain, and operate their solutions. By preventing technology lock-ins, Luigi allows organizations to react quickly to new trends.Starting Price: Free -
46
Preact
Preact
Preact provides the thinnest possible Virtual DOM abstraction on top of the DOM. It builds on stable platform features, registers real event handlers and plays nicely with other libraries. Most UI frameworks are large enough to be the majority of an app's JavaScript size. Preact is different: it's small enough that your code is the largest part of your application. That means less JavaScript to download, parse and execute - leaving more time for your code, so you can build an experience you define without fighting to keep a framework under control. Preact is fast, and not just because of its size. It's one of the fastest Virtual DOM libraries out there, thanks to a simple and predictable diff implementation. We automatically batch updates and tune Preact to the extreme when it comes to performance. We work closely with browser engineers to get the maximum performance possible out of Preact.Starting Price: Free -
47
Delphi
Embarcadero
Delphi is the ultimate IDE for creating cross-platform, natively compiled apps. Are you ready to design the best UIs of your life? Our award winning VCL framework for Windows and FireMonkey (FMX) visual framework for cross-platform UIs provide you with the foundation for intuitive, beautiful user interfaces that wow on every platform: Windows, macOS, iOS, and Android. Design your master UI layout once, then easily customize platform- and device-specific views without duplication of design effort. Drag-and-drop visual and non-visual components from the palette using our visual designer. Visually connect user interface elements to data sources using the LiveBindings Designer. Real-time design validation using Live On-Device Preview to broadcast the active form to multiple devices simultaneously. Add responsive design with resolution-aware components for desktop, tablets, and smartphones. Real, platform-specific native controls for an improved user experience. -
48
Webix
Webix
JavaScript UI library and framework for speeding up web development. JS Framework for cross-platform web Apps development 102 UI widgets and feature-rich CSS / HTML5 JavaScript controls. Save at least 3000+ development hours by using ready-made widgets and UI controls. Develop Web UI 30% faster. We have accumulated the best design ideas. We have meticulously considered UX of each Webix component for five conceptual designs. Our support service specialists know everything about our library and can help you solve any problem. We also have an official support forum where you can discuss issues with our developers. By using Webix JS framework you receive an elegant and lightweight code based on object-oriented programming concepts. Associate your project with jQuery JavaScript library, MVC frameworks AngularJS, React, Vue.js, Backbone.js, third party UI extensions.Starting Price: $848 -
49
Tauri
Tauri
Tauri is a framework that enables developers to build small, fast, secure, cross-platform applications by combining existing web front-ends with Rust-powered back-ends. It supports any JavaScript framework, so you don’t need to change your stack and leverages each operating system’s native web renderer to deliver app footprints as low as 600 KB. Deep inter-process communication bridges your JavaScript UI, Rust core logic, and native Swift or Kotlin components for seamless integration with system APIs. Security is built in from the ground up, with Rust at its center and a team-driven focus on hardening and innovation. The CLI scaffolds new projects via Bash, PowerShell, npm, Yarn, pnpm, Deno, Bun, or Cargo, and includes tools for bundling, templating, and secure defaults, all accessible through a simple “create-tauri-app” command.Starting Price: Free -
50
Alpine.js
Alpine.js
Alpine is a rugged, minimal tool for composing behavior directly in your markup. Think of it like jQuery for the modern web. Plop in a script tag and get going. Declare a new Alpine component and its data for a block of HTML. Dynamically set HTML attributes on an element. Prevent a block of HTML from being initialized by Alpine. Hide a block of HTML until after Alpine is finished initializing its contents. Reference elements directly by their specified keys using the magic property. Execute a script each time one of its dependencies change. Run code when an element is initialized by Alpine.Starting Price: Free
