List of the Top 25 Free Component Libraries in 2025

DHTMLX is a robust and user-friendly JavaScript UI library that offers an extensive array of customizable components for the creation of modern, responsive web applications. It features over 30 fully-functional UI widgets, such as grids, charts, diagrams, schedulers, Gantt charts, calendars, trees, and forms, all designed for optimized performance to ensure seamless operation across various browsers and devices. The library's compatibility with well-known web frameworks like React, Angular, and Vue.js makes it a stellar option for developers looking to enhance their projects with a dynamic UI library. Additionally, DHTMLX supports diverse data sources and formats, facilitating straightforward integration with multiple back-end technologies. Developers benefit from a high degree of configuration and customization options, enabling them to modify the look and functionality of UI components to align with their specific application needs while also providing the opportunity to incorporate custom features. Moreover, DHTMLX is backed by comprehensive documentation that encompasses all aspects of the library, including exhaustive API references, tutorials, and code samples, along with a vibrant community that offers support and resources for users. This extensive support network ensures that developers can easily navigate any challenges they encounter while using the library.

Flutter is an innovative user interface toolkit crafted by Google that facilitates the development of visually appealing, natively compiled applications across mobile, web, and desktop platforms, all from a single codebase. Thanks to its Stateful Hot Reload feature, developers can animate their applications almost instantly, enhancing productivity. The toolkit boasts a rich assortment of customizable widgets, allowing for the rapid construction of native interfaces in just a few minutes. This efficient development approach prioritizes features that improve the native user experience significantly. Flutter’s layered architecture lends itself to extensive customization possibilities, resulting in swift rendering capabilities and designs that are both expressive and versatile. The widgets are thoughtfully designed to incorporate necessary platform-specific differences, such as scrolling behaviors, navigation patterns, icons, and fonts, while the Flutter code is compiled into native ARM machine code through Dart's native compilers for optimal performance. The hot reload functionality greatly enhances workflow efficiency, allowing developers to experiment, refine user interfaces, add new features, and fix bugs with ease. With Flutter, developers can experience near-instant reload times without losing application state, whether using emulators, simulators, or actual devices. This fluid development experience encourages a more dynamic approach to app design, simplifying the processes of innovation and iteration, and empowering developers to bring their creative visions to life more effectively. As a result, Flutter is rapidly becoming a preferred choice for developers aiming to create high-quality applications across multiple platforms.

The Ionic Framework is a versatile open-source UI toolkit that empowers developers to create high-quality, efficient mobile and desktop applications using web technologies such as HTML, CSS, and JavaScript. Additionally, it seamlessly works with popular frameworks like React and Angular. To begin, you can install Ionic or refer to our First App Tutorial which covers essential concepts. The Installation Guide provides step-by-step instructions for setting up the framework. You can also explore the extensive library of stunning UI components offered by Ionic Framework. Furthermore, it enables the integration of native device features like Bluetooth, Maps, and HealthKit. Theming options are available to help you tailor the visual design of your Ionic application to match your branding. With a primary focus on enhancing the frontend user experience, Ionic Framework excels in UI controls, interactions, gestures, and animations. It is user-friendly and compatible with other libraries or frameworks such as Vue, React, and Angular, making it a great choice for developers looking to create exceptional applications. Ultimately, Ionic Framework provides a comprehensive solution for building modern applications that are both functional and aesthetically pleasing.

MUI offers a comprehensive suite of user interface resources aimed at streamlining the creation of new features. You can kick off your project with Material UI, a sturdy collection of components, or seamlessly incorporate your own design framework using our ready-to-use elements. This approach fosters a quicker development process while allowing for significant flexibility and oversight in your design choices. Each component comes prepped for immediate implementation, making it easy to craft visually appealing user interfaces without hassle. Whether you choose to adopt Google's Material Design or create a distinctive, elegant theme that showcases your brand, our components are designed to be both powerful and adaptable, granting you the ability to completely tailor their look and functionality. We emphasize inclusivity in our designs, ensuring that accessibility is a cornerstone in every feature we launch. Explore the reasons why numerous developers and teams around the world trust MUI's tools. With a continually growing repository of components available at no cost, you'll discover that they prioritize accessibility. We have established the fundamental UI components for your design system, freeing you from that responsibility and allowing you to concentrate on developing cutting-edge solutions for your audience. In today's landscape, where user experience reigns supreme, MUI is dedicated to achieving excellence across all facets of UI development, ensuring that every interaction is enjoyable and efficient. Furthermore, our commitment to innovation means that we continuously refine and expand our offerings to meet the evolving needs of developers.

Speed up the development of your internal tools with a low-code platform that empowers developers to build solutions in mere minutes. The SQL Generate feature enables users to transform natural language inputs into SQL queries effortlessly, compatible with databases like MySQL, PostgreSQL, and Supabase. Our platform grants developers extensive flexibility to enhance functionality through JavaScript, allowing them to utilize Template syntax to incorporate various string-type variables in diverse locations. ILLA seamlessly connects to any data source using APIs or popular databases, facilitating the chaining of actions to user events for improved responsiveness. By integrating backend data with frontend components, developers can execute simple data calls that enable rich and interactive information exchanges, ultimately streamlining the entire workflow for enhanced productivity. This blend of features ensures that creating sophisticated internal tools is not only faster but also more user-friendly.

Dash and Dash Enterprise empower users to create and distribute analytic web applications utilizing Python, R, or Julia, eliminating the need for JavaScript or DevOps expertise. Leading companies worldwide leverage AI, machine learning, and Python analytics, achieving remarkable results at a significantly lower expense compared to traditional full-stack development. Dash serves as their solution. Applications and dashboards capable of executing sophisticated analyses, including natural language processing, forecasting, and computer vision, can be efficiently delivered. You have the flexibility to work in Python, R, or Julia, and by transitioning from outdated per-seat license software to Dash Enterprise's unlimited end-user pricing model, you can significantly cut costs. Dash enables rapid deployment and updates of applications without requiring a dedicated IT or DevOps team. Furthermore, you can design visually stunning web apps and dashboards without any need for CSS coding. Kubernetes simplifies scaling processes, and the platform also ensures high availability for essential Python applications, making it an ideal choice for businesses looking to enhance their analytical capabilities. Overall, Dash and Dash Enterprise revolutionize the way organizations approach analytics and application development.

Embark on a hassle-free development journey with quick setup while leveraging the technologies you already love—JavaScript, HTML, and CSS. If you're apprehensive about the capabilities of PhoneGap or Cordova applications, you can set those concerns aside! Onsen UI guarantees that all animations are meticulously optimized for smooth operation on a wide variety of devices. We are committed to providing a seamless experience for applications built with Onsen UI, even on devices with limited resources. This framework not only is easy to learn but also serves as a powerful tool for crafting complex mobile applications. There is an abundance of educational resources available, such as detailed documentation, an interactive tutorial, and a welcoming community forum where you can seek assistance. Onsen UI features an extensive selection of UI components designed specifically for mobile applications, including tabs, side menus, and stack navigation, as well as a variety of other elements like lists and forms, enabling developers to create intuitive interfaces with ease. With its comprehensive toolkit, Onsen UI empowers you to effortlessly design captivating mobile experiences, allowing for creativity and efficiency in your development process. You'll find that the framework's versatility caters to both novice and experienced developers alike, making it a go-to choice for mobile application development.

The Pylons web framework is designed for the easy and effective development of web applications and websites. These applications can range greatly in complexity, from a basic Python module to a comprehensive directory structure that caters to more complex web needs. Pylons offers project templates that enable developers to rapidly launch a new web application or create a personalized setup from scratch according to their unique specifications. This framework streamlines the development of web applications in Python with a focus on a minimalist, component-oriented approach that facilitates scalability. It builds upon developers' existing Python expertise, encouraging an adaptable application design that maximizes speed and efficiency. Notably, the framework features an impressively compact per-request call stack that guarantees outstanding performance, relying on well-established, trustworthy Python libraries. While the Pylons 1.0 series is deemed stable and suitable for production use, it is presently in maintenance mode. Consequently, the Pylons Project has redirected its efforts toward the Pyramid web framework for future development, and users currently on Pylons 1.0 are strongly urged to contemplate migrating to Pyramid for their future projects, which delivers even greater capabilities and ongoing support. This migration can greatly improve the overall development experience, unlocking access to an array of new features that are continually refined and updated. Ultimately, embracing Pyramid will not only enhance functionality but also align developers with the latest advancements in web application technology.

Cryptography integrates both advanced techniques and basic interfaces for essential cryptographic methods, such as symmetric encryption, hash functions, and key generation algorithms. The high-level symmetric encryption options available in cryptography allow users to execute encryption processes with ease. This domain is generally divided into two separate tiers: one that offers secure and user-friendly methods requiring little configuration, making them suitable for developers with limited choices to make. On the other hand, the second tier consists of low-level cryptographic components that can be highly dangerous if used incorrectly, requiring a deep comprehension of intricate cryptographic concepts and careful judgment. Because of these vulnerabilities, this foundational level is often referred to as the "hazmat" layer, with pertinent resources found in the cryptography.hazmat package, which always includes an initial warning in the documentation to draw attention to the potential risks. Furthermore, while becoming proficient in these low-level interfaces can enable the creation of sophisticated custom solutions, it necessitates a dedication to learning and implementing best practices in cryptographic safety, highlighting the importance of ongoing education in this critical field. Overall, understanding both layers allows for a balanced approach to security and functionality in cryptographic applications.

The python-docx library is specifically crafted for the purpose of handling Microsoft Word (.docx) files through Python programming. Within Word documents, paragraphs are essential as they serve multiple functions, including body text, headings, and list items such as bullet points. Users have the ability to set both width and height for certain elements, although it is usually best practice to refrain from doing so. When one dimension is established, python-docx will automatically determine the other dimension to preserve the aspect ratio, ensuring that images appear as intended without any distortion. For those who may not be well-acquainted with Word paragraph styles, it is beneficial to delve into this feature, as it allows users to apply a wide array of formatting options to a paragraph simultaneously. This library not only permits the creation of new documents but also enables the modification of pre-existing ones, and while it mainly emphasizes making adjustments to current files, beginning with a blank document can create the illusion of constructing a project from scratch. Furthermore, by leveraging this library, users can significantly enhance their efficiency when producing and modifying Word documents, making it a valuable tool for anyone working with this format.

Django-MySQL enhances Django's existing compatibility with MySQL and MariaDB by adding distinctive features that aren't available in other database systems. It brings forth an innovative caching backend that utilizes MySQL's upsert functionality and also includes data compression to boost performance. Moreover, named locks are introduced to streamline the locking mechanism for external resources, thereby facilitating easier management of concurrency issues. To guarantee the best configurations between Django and MySQL, additional validation checks have been integrated into Django’s check framework. In addition, Django-MySQL offers various extensions to the QuerySet, which can be applied in numerous ways, such as by incorporating the QuerySetMixin into an existing QuerySet subclass. This adaptability empowers developers to customize their database interactions, ensuring they align more closely with their unique requirements. Ultimately, these features collectively enhance the overall performance and usability of Django applications that rely on MySQL or MariaDB.

React-Bootstrap is a popular front-end framework that has been specifically tailored for React, effectively replacing the traditional JavaScript used in Bootstrap. Each component within this framework is meticulously designed as a true React component, thus eliminating the need for extraneous dependencies like jQuery. Being one of the longest-standing libraries created for React, React-Bootstrap has evolved alongside the framework, making it an excellent option for building user interfaces. It places a strong emphasis on compatibility, staying true to the fundamental principles of Bootstrap while integrating smoothly into the broader UI ecosystem. By utilizing only the Bootstrap stylesheet, React-Bootstrap can easily work with the various Bootstrap themes that developers appreciate. This framework takes full advantage of the React component model, which provides enhanced control over both the aesthetic and functional aspects of components. In addition, accessibility has been a primary focus in the development of each component, resulting in a collection that is accessible by default, going beyond the capabilities of conventional Bootstrap. This not only improves the development experience but also guarantees that applications built with React-Bootstrap are more user-friendly and inclusive, fostering a better overall interaction for users. Furthermore, the framework’s continuous updates and community support ensure that it remains relevant and effective in meeting modern development needs.

Requests is a beautifully crafted library for HTTP that streamlines the process of making HTTP/1.1 requests. It removes the burden of manually adding query strings to URLs or encoding data for PUT and POST requests, opting instead to promote the user-friendly JSON method. With a remarkable weekly download figure of around 30 million, Requests ranks as one of the most widely used Python packages and is integrated into more than 1,000,000 repositories on GitHub, reinforcing its dependability and popularity. This robust library is easily accessible via PyPI and is well-equipped to handle the needs of creating efficient and strong HTTP applications for contemporary use cases. It includes features such as automatic content decompression and decoding, compatibility with international domains and URLs, as well as session management that ensures cookie persistence. Furthermore, it provides browser-like TLS/SSL verification, supports both basic and digest authentication, and manages cookies in a way that feels intuitive for users. Developers can also utilize multi-part file uploads, SOCKS proxy capabilities, connection timeouts, and streaming downloads, offering a well-rounded toolbox for building applications. Overall, the Requests library exemplifies the principles of simplicity and effectiveness in web communication, making it an invaluable resource for developers across various projects. Its ongoing popularity suggests that it will continue to evolve and adapt to the changing needs of the software development landscape.

Selenium WebDriver mimics the actions of a real user when interacting with web browsers, whether on local machines or through remote servers. It provides an easy-to-use programming interface that emphasizes efficiency. With very little setup, WebDriver can effectively operate on all major web browsers. This tool allows you to automate processes in widely used browsers such as Firefox, Safari, Edge, Chrome, Internet Explorer, and beyond! The term Selenium WebDriver refers to both the language bindings and the various implementations that enable browser manipulation, and it is often simply referred to as WebDriver. The World Wide Web Consortium (W3C) is an international organization dedicated to creating web standards. In June 2018, WebDriver was formally adopted as a W3C recommendation. Major browser developers like Mozilla, Google, Apple, and Microsoft are committed to supporting WebDriver, continuously improving both their browsers and the associated control code, leading to more uniform functionality across platforms. This uniformity enhances the dependability of your automation scripts, resulting in a more efficient testing process. Consequently, developers can expect their automated tests to yield consistent results across different environments.

Semantic UI React represents the official integration of Semantic UI into the React ecosystem, removing the necessity for jQuery and providing a declarative API that includes shorthand properties, sub-components, and an auto-controlled state. In contrast to jQuery, which depends on direct manipulation of the Document Object Model (DOM), React employs a virtual DOM that serves as a JavaScript representation of the actual DOM. This method allows React to implement patch updates to the DOM without directly accessing it, rendering synchronization between jQuery's DOM alterations and React's virtual DOM impractical. As a result, the capabilities that jQuery offered have been entirely re-engineered within the React framework. Users can specify which HTML elements to render and can effortlessly swap components as needed. The framework also supports the passing of additional properties to the rendered components, which significantly enhances both flexibility and functionality. The ability to augment components within the framework is especially advantageous, as it allows for a seamless composition of features and properties without the burden of adding extra nested components. Shorthand props contribute to simpler markup creation, thereby optimizing various implementation scenarios. Moreover, all object properties are automatically applied to child components, which simplifies usage and minimizes boilerplate code. Ultimately, Semantic UI React equips developers with a comprehensive suite of tools to build user interfaces more effectively, fostering a more efficient development process. This efficiency not only accelerates project timelines but also enhances the overall quality of the user experience.

Develop web projects with a mobile-first, responsive design using a user-centric component library that emphasizes accessibility. Create a function that combines two theme objects into one, making sure that in cases of conflicting styles, the styles from the second theme take precedence. Tailor composite components with Grommet by employing atomic design principles, allowing you to craft a library that meets your individual needs. It’s crucial to integrate features such as keyboard navigation and screen reader tags to enhance the accessibility of your design. Grommet is engineered to adhere to the W3C’s WCAG 2.1 guidelines from the beginning, fostering inclusivity for all users. In addition, ensure broad device support by leveraging Flexbox and CSS Grid, enabling layouts that adjust fluidly to both modern smartphones and expansive widescreen displays, thus providing a uniform user experience across diverse platforms. This holistic strategy not only enhances usability but also empowers developers to create web applications that are both effective and inclusive for a wide audience. Ultimately, prioritizing accessibility and responsiveness will lead to a more engaging experience for users regardless of their devices.

Urllib3 is a powerful and user-friendly HTTP client crafted specifically for Python programmers, making it a fundamental component in the Python ecosystem. Many libraries depend on it to enhance their capabilities, highlighting its importance in modern software development. It offers vital functionalities that are typically lacking in the standard library, including features like thread safety, connection pooling, and comprehensive client-side TLS/SSL verification. Moreover, urllib3 facilitates file uploads using multipart encoding and comes with features for retrying requests and managing HTTP redirects effectively. It also supports various encoding methods such as gzip, deflate, and brotli, alongside providing proxy support for both HTTP and SOCKS protocols. Its extensive test coverage and popularity are evident as it ranks among the most downloaded packages on PyPI, being a crucial dependency for well-known libraries like Requests and Pip. Distributed under the MIT License, it is readily available for developers to use in their projects. For those seeking guidance, the API Reference documentation offers a thorough overview of the API, while the User Guide serves as a valuable resource for harnessing the library's full potential; additionally, the Advanced Usage guide caters to users interested in making intricate configurations and adjustments. This remarkable adaptability and range of features solidify urllib3's status as an indispensable resource for anyone engaged in HTTP operations in Python programming. Its ongoing updates and community support further enhance its utility, ensuring that it remains relevant in a rapidly evolving programming landscape.

In recent times, high-performance computing has become increasingly available to a larger pool of researchers in the scientific field than it ever has been before. The effective synergy of high-quality open-source software and reasonably priced hardware has played a crucial role in the widespread utilization of Beowulf class clusters and workstation clusters. Among the various approaches to parallel computation, message-passing has stood out as a notably efficient model. This approach is particularly advantageous for distributed memory systems and is heavily relied upon in today’s most challenging scientific and engineering tasks related to modeling, simulation, design, and signal processing. However, the environment for portable message-passing parallel programming used to be complicated, as developers had to navigate a multitude of incompatible choices. Fortunately, this scenario has vastly improved since the MPI Forum established its standard specification, which has simplified the development process considerably. Consequently, researchers are now able to dedicate more of their efforts to advancing their scientific research instead of dealing with the intricacies of programming. This shift not only enhances productivity but also fosters innovation across various disciplines.

Quick and versatile, the principles of vectorization, indexing, and broadcasting in NumPy have established themselves as the standard for modern array computations. This robust library offers a comprehensive suite of mathematical functions, random number generation tools, linear algebra operations, Fourier transformations, and much more. NumPy's compatibility with a wide range of hardware and computing platforms allows it to work effortlessly with distributed systems, GPU libraries, and sparse array structures. At its foundation, NumPy is constructed with highly optimized C code, enabling users to benefit from the speed typical of compiled languages while still enjoying the flexibility provided by Python. The intuitive syntax of NumPy enhances its user-friendliness and efficiency for programmers of all levels and expertise. By merging the computational power of languages such as C and Fortran with Python’s approachability, NumPy streamlines complex processes, leading to solutions that are both clear and elegant. As a result, this library equips users to confidently and easily address a diverse array of numerical challenges, making it an essential tool in the world of data science and numerical analysis. Furthermore, the active community around NumPy continuously contributes to its development, ensuring that it remains relevant and powerful in the face of evolving computational needs.

Chakra UI serves as a versatile and accessible collection of components tailored for building React applications effectively. Each component is thoughtfully designed with adherence to WAI-ARIA standards, ensuring that accessibility is prioritized throughout the library. This modular approach simplifies the process of composing new components, enabling developers to innovate easily. Our committed team of maintainers is always on hand to assist you throughout your development endeavors. The library not only boosts your productivity in crafting applications or websites but also offers a wealth of customizable components, allowing you to adjust each element to align with your specific design vision. Furthermore, Chakra UI is engineered to support various color modes, offering the choice between light and dark themes to suit your project's needs. With its emphasis on both functionality and visual appeal, you can expect a superior quality that stands out in any design system. Overall, Chakra UI aims to empower developers by combining usability with flexibility, making it an indispensable tool in your toolkit.

Components crafted for global use and accessibility are accessible to every user. They are subjected to extensive testing to ensure they deliver superior performance and reliability. The APIs are user-friendly and maintain consistent functionality across various platforms. Developers have access to resources that enable them to build customized components that follow standard interaction protocols. While customization is encouraged, it remains aligned with the principles of Material Design. Created by the Angular team, these components are designed to integrate seamlessly with Angular applications. You have the option to start from scratch or incorporate them into your pre-existing projects. Begin by developing the autocomplete panel alongside the options that will be displayed within it. Each option must be wrapped in a mat-option tag, and the value property for each option can be defined to establish the corresponding text input value upon selection. Moreover, think about incorporating distinctive styles or features to further elevate the overall user experience. By doing so, you can create a more engaging and intuitive interface for users.

Beautiful Soup is an efficient library tailored for the straightforward extraction of information from web pages. It functions by leveraging HTML or XML parsers and provides Pythonic functions to assist in navigating, searching, and modifying the parse tree. Support for Python 2 was officially terminated on December 31, 2020, which occurred a year after Python 2 was itself discontinued. As a result, all future development of Beautiful Soup will solely concentrate on Python 3. The last iteration of Beautiful Soup 4 that was compatible with Python 2 was version 4.9.3. Furthermore, Beautiful Soup is available under the MIT license, enabling users to easily download the tarball, integrate the bs4/ directory into almost any Python project or library path, and start using it immediately. This seamless integration contributes to its popularity among developers engaged in web scraping, making it a highly favored tool in the community. Moreover, its extensive documentation and active community support further enhance its appeal for both novice and experienced programmers alike.

Appsmith serves as an open-source low-code platform designed for the creation of personalized applications and internal tools. It features a user-friendly drag-and-drop interface, providing users the capability to seamlessly integrate databases and APIs. Moreover, it facilitates effortless sharing and collaboration among team members. You can develop various components such as dashboards, admin panels, CRUD applications, and forms, enhancing their dynamism and strength by incorporating custom logic through JavaScript. This versatility makes Appsmith a valuable asset for teams looking to streamline their development processes.

Establish a unified repository that encompasses styles, tokens, guidelines, code, components, and design patterns, all seamlessly integrated and synchronized with your existing tools. With zeroheight, you can effortlessly uphold consistency across various products while minimizing the time and resources required to confidently launch new brands and offerings. Our platform provides an array of features that cater to teams of all sizes, from startups to large enterprises, incorporating governance, analytics, and automation to streamline your workflow. This ensures that every team member has access to the most up-to-date resources, fostering collaboration and innovation.

Over 1,600 components and frameworks are available for Windows Forms (including WPF and ASP.NET Core), UWP and WinUI (covering Web Forms MVC and Core), as well as for Xamarin, Flutter, Angular, Blazor, Vue, and React. Among the most sought-after components are charts, grids, schedulers, diagrams, maps, gauges, docking systems, ribbons, and many others! Our commitment to enhancing your business operations is supported by collaboration with leading experts in the field, ensuring the highest quality of solutions. This extensive range of tools is designed to meet diverse needs across various platforms.