List of the Top 25 Free Component Libraries in 2026

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.

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.

CopyElement is a powerful tool for web designers using Elementor, offering a comprehensive library of customizable, responsive components for building websites faster. With over 650 pre-built elements, including headers, footers, and product pages, users can copy and paste components directly into their projects. The platform supports efficient workflows, making it ideal for designers and agencies. CopyElement also offers premium access to exclusive components and priority support, ensuring that users have the resources needed for faster, more professional website development.

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.

The JS Framework is a JavaScript UI library and framework crafted to boost the efficiency of web development, enabling the creation of cross-platform web applications with a robust suite of 102 UI widgets, along with comprehensive CSS and HTML5 JavaScript controls. By leveraging these ready-to-use widgets and UI elements, developers can significantly reduce development time by over 3000 hours, which allows them to craft web user interfaces at a pace that is 30% faster. Our dedicated team has meticulously curated top-notch design concepts, thoroughly assessing the user experience of each Webix component across five unique conceptual designs. Furthermore, our expert support team is equipped with in-depth knowledge of the library's intricacies and is prepared to help with any issues that may arise. For those seeking additional support, we provide an official forum where users can collaborate and resolve problems alongside our developers. Utilizing the Webix JS framework guarantees that your projects are built on clean, lightweight code founded on object-oriented programming principles, enabling smooth integration with the jQuery library, popular MVC frameworks such as AngularJS, React, Vue.js, and Backbone.js, as well as various third-party UI extensions, which significantly enriches the development journey. Not only does this all-encompassing solution quicken the development process, but it also amplifies the functionality and aesthetic appeal of your web applications, ensuring they stand out in a competitive market. With such comprehensive offerings, developers can truly elevate their projects to new heights.

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.

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.

Untitled UI is recognized as the largest Figma UI kit, React component library, and icon system globally, providing essential tools for designers and developers to swiftly create contemporary interfaces. The Figma library features an impressive selection of over 900 global styles and variables that encompass color, typography, and effects, complemented by more than 10,000 meticulously crafted components and variants, alongside 420 pre-designed page layouts suitable for both desktop and mobile, as well as 4,600 neutral icons and logos, all harmoniously integrated into a unified design system. On the development side, Untitled UI React presents a thorough open-source collection of production-ready components developed with React v19.1, Tailwind CSS v4.1, TypeScript v5.8, and React Aria, emphasizing type safety and accessibility features such as keyboard navigation and screen-reader support, while ensuring top-notch performance free from vendor lock-in. Additionally, the AI-ready Lovable and bolt.new kits offer instant prototyping capabilities through simple prompts, improving the user experience with seamless Figma previews and consistent styling across various development environments. This powerful combination not only enhances workflow efficiency but also inspires teams to concentrate on creativity and innovation, ultimately fostering a more dynamic design process. By integrating these sophisticated tools, Untitled UI transforms how projects are conceived and executed, making it an invaluable asset for any modern design team.

Appsmith is a powerful low-code platform designed for building custom internal tools, offering drag-and-drop widgets and seamless API integrations. Developers can customize apps with JavaScript, enabling rapid creation of dashboards, admin panels, and back-office applications. It supports full transparency through its open-source model, ensuring complete control over the development process. With robust features like role-based access, SSO support, and audit logging, Appsmith meets enterprise security standards and is ideal for businesses looking to accelerate internal application development without compromising security or compliance. Appsmith’s platform allows businesses to build AI-powered agents to automate various tasks within support, sales, and HR teams. These custom agents are designed to interact with users, process requests, and manage complex workflows using data-driven intelligence. By embedding these agents into existing business systems, Appsmith helps companies scale their operations efficiently, automate repetitive tasks, and improve both team and customer experiences.

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.

Ignite UI gives developers everything they need to build high-performance, data-intensive applications — all in one library. With 120+ fully featured UI components across Angular, React, Web Components, Blazor, jQuery, and desktop frameworks, it offers the fastest data grids, comprehensive charting, and the flexibility teams need to build at scale. Built for modern dev teams, Ignite UI includes CLI tools for faster integration, responsive layout tools like DockManager, and rich components like Pivot Grid and Spreadsheet. Combined with robust theming and global support, it ensures your apps are fast, consistent, and built to deliver.

Leaflet is recognized as the leading open-source JavaScript library designed for crafting interactive maps that are mobile-responsive. With a compact size of approximately 42 KB, it includes all the fundamental mapping features that developers frequently need. The library's design emphasizes simplicity, efficiency, and ease of use, making it accessible for a wide range of users. It is compatible with major desktop and mobile platforms, providing extensive support for plugins, a visually attractive and user-friendly API, and source code that is easy to navigate, promoting community contributions. Instead of trying to meet every conceivable mapping requirement, Leaflet focuses on refining essential functionalities. Utilizing hardware acceleration, it delivers a seamless experience akin to that of native applications. By harnessing the power of CSS3, the library ensures exceptionally smooth transitions when panning and zooming. Furthermore, it incorporates smart rendering techniques for polylines and polygons, employing dynamic clipping and simplification to boost performance. Its modular design allows developers to exclude features they do not need, and it effectively reduces tap delays on mobile devices, significantly improving user satisfaction. This compelling set of features makes Leaflet an outstanding option for developers in search of a trustworthy and efficient mapping solution, reinforcing its status in the realm of web development.

The Polymer library provides a comprehensive suite of tools for crafting custom elements, making it easier to ensure they function like typical DOM elements. Similar to standard DOM elements, Polymer components can be instantiated via constructors or document creation methods, and they can be customized through attributes or properties. Each element instance can have its own internal DOM, adapt to property and attribute changes, and be styled using both internal defaults and external styles, all while reacting to methods that modify their internal state. When you register a custom element, you associate a class with a designated custom element name, and the element features lifecycle callbacks to proficiently handle its various phases. Furthermore, Polymer supports property declarations, allowing for the harmonious integration of your element's property API with the Polymer data system. The use of Shadow DOM provides your element with a locally scoped and encapsulated DOM tree, and Polymer can automatically construct and populate a shadow tree for your element based on a DOM template, thereby improving the modularity and reusability of your code. This combination of capabilities not only makes it easier to develop custom elements but also guarantees their seamless integration into the broader web components ecosystem. Consequently, developers benefit from enhanced flexibility and maintainability in their web applications, leading to more efficient workflows and improved user experiences.

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.

Microsoft is committed to keeping WinJS functional for its existing users, yet there are no plans to add new features or address feature requests at this time. The primary focus for bug fixes will be on resolving critical issues that impede customer deployments, while also considering solutions for bugs that support users in maintaining their current WinJS applications. Users have the opportunity to engage by reviewing code submissions, providing feedback, proposing and testing new features as they are introduced, reporting issues, and validating fixes as they are rolled out, along with sharing their own code changes. It's crucial to understand that all code submissions will be subjected to an extensive review and testing procedure by the team, ensuring that only those meeting the highest standards of quality and design are integrated into the main codebase. Moreover, active participation from users can significantly bolster the overall stability and performance of WinJS for the entire community. By collaborating in this manner, users not only contribute to the enhancement of WinJS but also foster a sense of community and shared responsibility in its ongoing development.

The pace at which an application can be launched is vital for achieving success in today’s market. Sadly, many companies, agencies, and developers stall their progress by dedicating too much time to building fundamental features from scratch, which leads to extended development timelines. By opting for pre-existing functionalities, your application can kick off with a robust foundation, facilitating swift progress right from the beginning. Utilizing Onymos's extensive, full-stack solutions can reduce your development time by as much as 80%, allowing you to roll out your application in just days rather than months. Each feature provided by Onymos represents a considerable investment of coding hours, with this amount continually increasing as new innovations are developed. Additionally, when software or APIs are updated, our features also evolve, integrating vital elements such as UI/UX design, front-end logic, and cloud services like Stripe, APNs, and Amazon S3. With Onymos Features, you gain a comprehensive toolkit that simplifies the development journey. Renowned organizations such as Albertsons, CVS Pharmacy, and Walmart have already adopted Onymos for their app development, showcasing the success of this forward-thinking strategy. By selecting Onymos, you not only hasten your project’s timeline but also guarantee that it stays competitive and relevant in an ever-changing digital environment. This strategic partnership can ultimately lead to better resource allocation and innovation within your organization.

Openpyxl is a Python library specifically created for handling Excel 2010 files in various formats, including xlsx, xlsm, xltx, and xltm. This library emerged because there was a lack of a built-in solution for managing Office Open XML files within Python, and it has its roots in the PHPExcel project. It's crucial to recognize that openpyxl does not inherently guard against certain vulnerabilities, such as quadratic blowup or billion laughs XML attacks; however, these threats can be alleviated by utilizing the defusedxml library. To set up openpyxl, you can easily install it using pip, and it is advisable to do this in a Python virtual environment to prevent conflicts with existing system packages. If you're looking to use a particular version of the library, especially if it contains important fixes not yet made public, you can do so without any hassle. Additionally, you can start using openpyxl without needing to create a physical file on your system; just import the Workbook class and commence your operations right away. As you create new sheets, they receive default names, and should you choose to rename a worksheet, you can access it via the relevant key from the workbook. This straightforward functionality contributes to the popularity of openpyxl among Python developers who deal with Excel files, making it an essential tool in their programming toolkit. By simplifying the process of Excel file manipulation, openpyxl allows developers to focus more on their data rather than the complexities of file handling.

Autotuning in the realm of programming has demonstrated remarkable enhancements in both performance and portability across a range of disciplines. However, the portability of autotuners often faces constraints when moving between different projects, primarily due to the requirement for a domain-informed representation of the search space to achieve optimal results, coupled with the reality that no single search method proves universally effective for all scenarios. In response to this challenge, OpenTuner has been introduced as an innovative framework aimed at developing multi-objective program autotuners that cater to specific domains. This framework provides a fully customizable representation of configurations, along with an extensible technique representation that allows for the integration of domain-specific strategies, and features a user-friendly interface for engaging with the programs undergoing tuning. A key highlight of OpenTuner is its capacity to leverage an array of search techniques concurrently; those that yield high performance receive more substantial testing budgets, while lesser-performing methods are systematically phased out. This strategic adaptability not only streamlines the autotuning process but also significantly boosts its overall efficacy, making it a valuable tool for developers. Additionally, the flexibility offered by OpenTuner encourages experimentation, enabling programmers to explore novel approaches tailored to their unique project requirements.

Oracle ADF Faces provides a suite of over 150 Ajax-enabled JSF components aimed at enriching the development of advanced web user interfaces for Java EE applications. These components can be utilized and deployed without any financial burden through Oracle ADF Essentials, which makes them accessible to a wide range of developers. They feature robust support for data visualization and are fully compatible with JSF 2, offering a comprehensive JavaScript API alongside a convenient drag-and-drop framework that simplifies the development process. Additionally, they include frameworks for various UI elements such as dialogs, popups, and navigation menus, ensuring versatility in design. The components are built with a focus on internationalization and accessibility, accommodating tablet and touch gestures, which enhance user interaction. By enabling declarative partial page rendering, they also support customizable skinning and page templating, allowing for the creation of reusable page regions and components. Moreover, these components align well with the Oracle Alta UI design principles and integrate efficiently with ADFc for TaskFlow functionality and bookmarking capabilities, as well as with ADFm for streamlined data binding. With these features, Oracle ADF Faces components significantly empower developers to build dynamic and interactive web applications easily and effectively, ultimately enhancing the overall user experience.

Oracle Data Access Components (ODAC) represent a comprehensive suite of tools and drivers tailored for Windows and .NET ecosystems. This collection not only streamlines access to data within .NET but also incorporates Microsoft Visual Studio tools, enabling the development of applications that connect with Oracle databases, including support for ASP.NET providers. ODAC provides extensive client support and optimizes advanced capabilities of Oracle databases, enhancing performance, ensuring high availability, and implementing stringent security protocols. Furthermore, it integrates smoothly with Visual Studio, creating an efficient and cohesive development experience for programmers. The Oracle Data Provider for .NET complies with Microsoft’s ADO.NET interface, allowing for easy access to Oracle databases. Additionally, the OLAP Data Manipulation Language (OLAP DML) empowers users to effectively define and manage objects in analytic workspaces. With a commitment to high performance, ODAC delivers a rich array of data access mechanisms via Microsoft ADO and OLE DB, as well as crucial information on installation, configuration after installation, and operational guidelines to help users maximize its capabilities. Overall, ODAC stands out as a robust solution for developers engaged in Oracle database projects within the .NET framework, making it an indispensable tool in their toolkit. This versatility makes it suitable for a wide range of applications, from simple data retrieval to complex enterprise-level solutions.

Parsel is a Python library that is distributed under the BSD license, designed to simplify the process of extracting and manipulating data from HTML and XML documents by utilizing XPath and CSS selectors, with the added flexibility of incorporating regular expressions. To get started, one must create a selector object that targets the specific HTML or XML content for analysis. Once this is established, users can leverage either CSS or XPath expressions to pinpoint the desired elements. CSS acts as a styling language for HTML, offering selectors that connect styles to specific HTML elements, while XPath is employed to choose nodes within XML documents and can also be effectively used with HTML. While both CSS and XPath are viable options, CSS generally offers improved readability, whereas XPath possesses functionalities that may not be attainable through CSS alone. Built upon the lxml library, parsel selectors include certain EXSLT extensions and come equipped with pre-registered namespaces for use in XPath queries. Additionally, parsel selectors facilitate the chaining of selectors, allowing users to primarily select elements by class with CSS and seamlessly switch to XPath when necessary, thereby providing enhanced flexibility in data extraction tasks. This combination of features renders parsel an invaluable resource for developers engaged in web data manipulation. Moreover, the ability to toggle between two powerful selection methods ensures that users can optimize their data extraction strategies according to the complexity of their tasks.

Pexpect significantly enhances Python's capabilities for managing other applications. This library, written entirely in Python, is adept at creating child processes, managing them, and responding to specific output patterns. Much like Don Libes’ Expect, Pexpect enables scripts to communicate with child applications as though a user were manually inputting commands. It proves especially beneficial for automating the management of interactive applications such as ssh, FTP, passwd, and telnet. Moreover, Pexpect simplifies the automation of setup scripts, allowing for the efficient replication of software installations across multiple servers. This tool is also instrumental in performing automated software testing, making it a versatile asset in various programming environments. While Pexpect draws inspiration from the concepts of Expect, its complete implementation in Python differentiates it from other similar libraries. Importantly, Pexpect does not require TCL or Expect, nor does it need the compilation of C extensions, which enhances its adaptability across any system that supports Python's standard pty module. The straightforward design of the Pexpect interface makes it highly accessible for developers, ensuring that even those with minimal experience can utilize its features effectively. In summary, Pexpect emerges as a powerful solution for automating and managing a wide range of applications with ease and efficiency.