List of the Top 8 JavaScript Libraries for Svelte in 2025

FusionCharts stands out as a premier data visualization solution that empowers developers to design interactive and adaptive charts for both web and mobile applications. Featuring more than 100 types of charts, which include line, bar, area, and pie charts, along with over 2000 maps, it allows users to represent intricate data sets effectively, facilitating better decision-making processes. Constructed on JavaScript, the library integrates seamlessly with popular frameworks like AngularJS, React, and Vue.js, making it a versatile choice for developers. Its intuitive API and extensive documentation ensure that developers, regardless of their experience level, can utilize it with ease. Moreover, it boasts an array of features, including real-time updates and compatibility across various web browsers. Users are also granted a multitude of customization options, enabling them to adapt charts to meet their unique requirements. With a track record spanning over ten years of continuous development and enhancements, FusionCharts has established itself as a dependable and powerful tool for data visualization, earning the trust of countless businesses and organizations around the globe, while also fostering a vibrant community of users who share tips and best practices.

JointJS+ is a sophisticated diagramming toolkit that serves as a commercial upgrade to JointJS, enabling developers and organizations of all sizes to create intricate Low-Code/No-Code and visual applications effortlessly. By leveraging ready-made UI plugins, developers can tailor their applications, modify user interfaces, and integrate elements tailored to their specific needs. Companies can apply JointJS+ to seamlessly connect their interfaces with workflow systems, develop business process management tools, create diagramming solutions, and manage projects, among other applications. The toolkit includes a robust programmer's kit that facilitates features like undo/redo functionality, graph manipulation, and data validation. Additionally, it boasts an array of features such as custom shapes, JSON import and export capabilities, interactive diagrams, a read-only mode, automatic layouts, an inline text editor, a path editor, zoom options, charting functionalities, and much more. With a risk-free 30-day trial, users can fully explore the extensive capabilities and versatility that JointJS+ has to offer, making it an attractive choice for developers looking to enhance their projects.

The jsPlumb Toolkit enables users to swiftly launch JavaScript applications that emphasize visual connectivity. It is commonly utilized in the development of various applications, including flowchart designers, call center platforms, data visualizations, process builders, and many others. As a robust, mature, and standards-compliant diagramming library, the jsPlumb Toolkit serves as a reliable foundation for users' own application development. For developers, the jsPlumb Toolkit provides an extensive range of features, including pan and zoom capabilities, automatic layouts, edge routing, and object inspectors, among others. This diverse array of functionalities empowers developers to concentrate on what distinguishes their applications while avoiding the unnecessary effort of reinventing existing solutions. Additionally, the toolkit's versatility makes it suitable for a wide range of industries, further enhancing its appeal to developers seeking innovative solutions.

Auth.js is a robust open-source library designed for authentication that seamlessly integrates with modern JavaScript frameworks, providing a secure and flexible solution for managing user access. It supports a wide array of authentication methods, including OAuth for services like Google and GitHub, user credentials, and WebAuthn, allowing developers to choose the most suitable approach for their specific applications. Its adaptability extends across several frameworks such as Next.js, SvelteKit, Express, Qwik, and SolidStart, making it easy to implement authentication features on various platforms. Additionally, Auth.js is equipped with built-in support for popular databases like Prisma, Drizzle ORM, Supabase, Firebase, and TypeORM, which simplifies the management of user data significantly. To bolster security, it employs mechanisms such as signed cookies, CSRF token protection, and encrypted JSON Web Tokens (JWTs), all aimed at effectively safeguarding user information. Furthermore, Auth.js is engineered for high performance in serverless environments and comes with comprehensive documentation and practical examples that facilitate a smooth onboarding process for developers. This library not only streamlines the authentication process but also guarantees that applications maintain both security and a user-friendly experience, ultimately enhancing the overall functionality of web applications. In an era where security and usability are paramount, Auth.js stands out as a reliable choice for developers seeking to implement authentication solutions.

SVAR presents an extensive suite of user interface elements and widgets aimed at enhancing the development of web applications utilizing React, Svelte, and Vue frameworks. By implementing these pre-built UI components, developers can significantly reduce both the time and expenses involved in their projects while ensuring that they uphold excellent quality benchmarks. The offerings of SVAR include: - DataGrid: Create robust, high-performance tables equipped with features such as inline editing, multi-column sorting, tree structures, context menus, and keyboard navigation. - Gantt Chart: Incorporate interactive task management and scheduling functions into your application. With user-friendly drag-and-drop capabilities, customizable timeline scales, and support for hierarchical subtasks, dependencies, and progress tracking, the SVAR Gantt Chart provides all the tools necessary to effectively visualize project workflows. - File Manager: Integrate an intuitive file explorer into your web application. This component features advanced capabilities like split views, file previews, a built-in search function, and essential file management operations such as copying, deleting, uploading, and downloading. - UI Core Library: Utilize a set of fundamental UI controls, which includes buttons, date pickers, checkboxes, combo boxes, and popups. Elevate your data-driven web applications and expedite the development process with SVAR UI, ensuring a smarter and more efficient workflow!

Dexie.js acts as an efficient and reliable interface for IndexedDB, designed to simplify the management of client-side storage. With a minified and gzipped size of about 29k, it offers an uncomplicated API that addresses the complex issues associated with the native IndexedDB, such as erratic error handling, sluggish querying, a lack of reactivity, and heightened code intricacies. The library is constructed on a well-designed API that boasts robust error management, the potential for functionality extension, and an understanding of change tracking, while also enhancing KeyRange features to facilitate various operations like case-insensitive searches, set matches, and OR conditions. By conforming to the IndexedDB specification and utilizing its full range of features, Dexie.js enables developers to interact with existing IndexedDB data seamlessly, eliminating the need for data migration. It also provides support for real-time composable queries, allowing components to instantly reflect database changes across numerous front-end frameworks such as React, Svelte, Vue, and Angular. Moreover, with the addition of Dexie Cloud, developers can build dependable, authenticated, and access-controlled local-first applications with minimal extra coding. This rich array of functionalities positions Dexie.js as an indispensable tool for contemporary web development, especially when it comes to managing client-side data with efficiency and ease. As the demand for better data handling solutions continues to grow, Dexie.js is likely to remain a popular choice among developers seeking to enhance their applications.

Introducing a user-friendly image editing SDK for both desktop and mobile platforms, designed to enhance the quality of images uploaded by your clients. Establish specific image requirements that empower your users to submit superior visuals effortlessly. This SDK is fully compatible with all major JavaScript frameworks, ensuring seamless integration. It allows for cropping, rotating, and resizing images, as well as adding annotations and adjusting color settings, making it versatile for various editing needs. Key Features Include: Aspect Ratio Control: You can mandate a fixed aspect ratio for all images or allow a selection of options, ensuring the final output is always flawless. Rapid Uploads: Optimize file upload speeds and minimize server bandwidth by performing image compression and resizing directly in the browser. Image Manipulation: Achieve the ideal crop consistently by rotating, resizing, and flipping images with ease, utilizing zoom controls, mouse wheel, touchpad, or user-friendly multi-touch gestures. Guiding Overlays: Assist your customers in uploading high-quality images by providing overlay guides for bleed margins and profile picture dimensions within the editing interface, ensuring they understand the requirements clearly. Additionally, this feature enhances the overall user experience by making the editing process more intuitive and engaging.

Million.js introduces a groundbreaking "block" virtual DOM that surpasses React's conventional virtual DOM by prioritizing data differences over DOM differences. This framework utilizes a dedicated compiler that significantly boosts the performance of React components directly on the server side. For those tired of transitioning between various frameworks and managing extensive migrations, Million.js provides an automatic drop-in mode that speeds up your React applications without necessitating changes to your current codebase. Our innovative approach to the virtual DOM is known as the block virtual DOM, and you can gain a deeper understanding of its workings by investigating topics such as virtual DOM, back in block, and the implementation process in React via behind the block(). We are consistently working to overcome existing barriers, aiming to create a more seamless experience for developers. Nevertheless, it is important to keep in mind that not every application will experience the advantages of Million.js; if your project does not heavily depend on user interfaces, you may not see a substantial boost in performance. Thus, it is vital to carefully evaluate the specific requirements of your application before adopting this framework. In conclusion, making an informed decision about integration can lead to optimized performance tailored to your unique needs.