Best JavaScript Libraries for Svelte

FusionCharts is a leading data visualization tool that helps developers create interactive and responsive charts for web and mobile applications. With 100+ chart types including line, bar, area, pie charts, and 2000+ maps, it enables users to visualize complex data sets and make informed decisions. The library is built on JavaScript and can be easily integrated with popular frameworks such as AngularJS, React, and Vue.js. Its user-friendly API and comprehensive documentation make it accessible to developers of all skill levels. Additionally, the library offers a wide range of features such as real-time updates and cross-browser compatibility. It also has a wide range of customization options, allowing users to tailor charts to their specific needs. With over a decade of development and updates, FusionCharts is a reliable and robust choice for data visualization and is trusted by thousands of businesses and organizations worldwide.

JointJS+ is a diagramming toolkit, a commercial extension of JointJS, that allows developers and companies of any size to create advanced Low-Code/No-Code and visual applications. Developers can utilize pre-built UI plugins to build custom applications, customize user interfaces and embed elements according to their requirements. Businesses can utilize JointJS+ to integrate interface with workflow systems, build business process management, diagramming, and project management applications, and more. It provides a programmer’s kit, which allows users to undo or redo changes, conduct graph manipulation, and validate data. Other features include custom shapes, JSON import/export, interactive diagrams, read-only view, automatic layouts, inline text editor, path editor, zoom, charts, and more. Start a risk-free 30-day trial to experience the power and flexibility of JointJS+.

With the jsPlumb Toolkit users can rapidly bring to market Javascript applications that are focused on visual connectivity. People use jsPlumb to create flowchart designers, call center applications, data visualizations, process builders and much more. jsPlumb Toolkit is a mature, powerful and standards compliant diagramming library solution users can rely on as the foundation for their own applications. For developers, the jsPlumb Toolkit offers a rich set of functionality such as pan/zoom, automatic layouts, edge routing, object inspectors, and a whole lot more. This comprehensive feature set allows developers to focus on what makes application unique and not waste time reinventing the wheel.

Auth.js is a library for authentication that is open-source and crafted to work effortlessly with contemporary JavaScript frameworks, delivering a secure and adaptable authentication process. It accommodates a range of authentication techniques, such as OAuth options like Google and GitHub, traditional credentials, and WebAuthn, enabling developers to select the best-fitting method for their projects. This library is compatible with various frameworks, including Next.js, SvelteKit, Express, Qwik, and SolidStart, which allows for the implementation of authentication across diverse platforms. Additionally, Auth.js comes with built-in integration for widely-used databases like Prisma, Drizzle ORM, Supabase, Firebase, and TypeORM, making user data management straightforward. To ensure the safety of user information, it features security measures such as signed cookies, validation of CSRF tokens, and encrypted JSON Web Tokens (JWTs). Furthermore, Auth.js is optimized for performance in serverless settings, and it provides thorough documentation along with examples to assist developers. Overall, its versatility and robustness make Auth.js an excellent choice for building secure authentication systems in a variety of applications.

SVAR offers a collection of user interface components and widgets designed to streamline web application development using React, Svelte, and Vue frameworks. By using these ready-made UI tools, web developers can dramatically cut development time and costs while maintaining high-quality standards for their projects. SVAR UI components: - DataGrid: Build powerful, high-performance tables with features like inline editing, multi-column sorting, tree structures, context menu and keyboard navigation. - Gantt Chart: Add interactive task management and scheduling capabilities to your app. With intuitive drag-and-drop functionality, customizable timeline scales, and support for hierarchical subtasks, dependencies, and progress tracking, SVAR Gantt offers everything you need to visualize project workflows. - File manager: Add a user-friendly file explorer to your web app. Supports advanced features like split views, file previews, a built-in search box, and basic file operations such as copy, delete, upload, and download. - UI core library: Access a collection of essential UI controls, including buttons, date pickers, checkboxes, combo boxes, and popups. Build data-driven web apps faster and smarter with SVAR UI!

Dexie.js serves as a streamlined and dependable wrapper for IndexedDB, aimed at making client-side storage management more approachable. With a minified and gzipped size of around 29k, it presents a straightforward API that tackles the intricate challenges posed by the native IndexedDB, including inconsistent error management, inefficient querying, a lack of reactivity, and overall code complexity. The library is built upon a thoughtfully crafted API, featuring strong error handling, the ability to extend functionality, and awareness of change tracking, in addition to enhanced KeyRange capabilities for diverse operations such as case-insensitive searches, set matches, and OR conditions. By adhering to the IndexedDB specification and leveraging its complete feature set, Dexie.js allows developers to seamlessly interact with existing IndexedDB data without any requirement for data migration. Additionally, it supports real-time composable queries, permitting components to reflect database changes instantaneously across multiple front-end frameworks like React, Svelte, Vue, and Angular. Furthermore, with the integration of Dexie Cloud, developers can create reliable, authenticated, and access-controlled local-first applications with minimal additional coding effort. This combination of features makes Dexie.js a highly valuable tool for modern web development, particularly when managing client-side data efficiently.

A client-side image editing SDK that is intuitive on desktop and mobile. Set image requirements to help your customers upload better images. Compatible with all popular JavaScript Frameworks Crop, rotate and resize images, add annotations, adjust colors and more. Top Features Crop aspect ratio: You can either enforce a single aspect ratio for all images or provide a range of options so that they are always perfect. Fast image uploads: Increase file upload speed and reduce server bandwidth usage by compressing and resizing images in the browser. Rotate, resize and flip: Get the perfect crop every time. Scale images with the zoom control, mousewheel, touchpad or intuitive multi-touch interaction. Overlay crop guides: Help customers upload better images. Overlay bleed margins and profile picture boundaries on the editor.

Million.js presents an innovative "block" virtual DOM that outperforms React's traditional virtual DOM by focusing on data diffs rather than DOM diffs. This framework employs a specialized compiler that enhances the performance of your React components directly on the server side. If you're exhausted from switching between frameworks and handling extensive migrations, Million.js offers an automatic drop-in mode that accelerates your React applications without requiring any alterations to your existing code. Our unique methodology for the virtual DOM is termed the block virtual DOM, and you can delve deeper into its functionality by exploring virtual DOM, back in block, and the implementation process in React through behind the block(). We are continually striving to eliminate existing limitations, ensuring a smoother experience for developers. However, it's crucial to recognize that not all applications will benefit from Million.js; if your application is not heavily reliant on user interfaces, you might not observe significant performance enhancements. This makes it essential to assess your application's specific needs before integrating the framework.