# SolidJS vs Svelte

**Leader by Vioscale score:** Svelte

| Attribute | SolidJS | Svelte |
|---|---|---|
| **Vioscale score** | 69.9 (77% (high)) | 78.3 (71% (medium)) |
| activity.commits_last_30d | 60 | 87 |
| adoption.dependent_repos | 4,425 | 56,439 |
| adoption.github_stars | 35,923 | 87,991 |
| adoption.package_downloads_weekly | 3,858,346 | 5,781,541 |
| adoption.stackoverflow_questions | 600 | 9,000 |
| content.faq | `[{"answer":"SolidJS is a JavaScript library for building user interfaces using a declarative programming model with JSX. Unlike frameworks that use a virtual DOM, SolidJS compiles templates directly into real DOM nodes and updates them through fine-grained reactivity, where only code dependent on changed state will re-execute. This approach results in smaller bundle sizes and optimal runtime performance.","source":"https://github.com/solidjs/solid","question":"What is SolidJS and how does it work?","confidence":0.95},{"answer":"SolidJS uses fine-grained reactivity and direct DOM compilation instead of React's virtual DOM reconciliation. In SolidJS, components are functions that run once, and only the specific reactive values that change trigger updates, whereas React re-renders components when state changes. This typically results in better performance and smaller compiled bundle sizes compared to React applications.","source":"https://github.com/solidjs/solid","question":"How does SolidJS differ from React?","confidence":0.9},{"answer":"Yes, SolidJS is completely open-source and free to use under the MIT license. The MIT license permits both commercial and personal use, modification, and distribution without cost or licensing restrictions.","source":"https://github.com/solidjs/solid","question":"Is SolidJS open-source and what license does it use?","confidence":0.95},{"answer":"Yes, SolidJS has first-class TypeScript support and is built on JSX and TypeScript. To use TypeScript with SolidJS, you configure your tsconfig.json with jsx set to 'preserve' and jsxImportSource set to 'solid-js'. This provides full type safety for components, props, and reactive state.","source":"https://github.com/solidjs/solid","question":"Does SolidJS support TypeScript?","confidence":0.9},{"answer":"Fine-grained reactivity refers to a system where the framework tracks which pieces of code depend on which data, and only re-executes the code that depends on changed values. In SolidJS, when state changes, only the specific DOM updates and side effects that depend on that state will run, rather than re-rendering entire components. This precision minimizes unnecessary computation and DOM manipulation.","source":"https://github.com/solidjs/solid","question":"What does 'fine-grained reactivity' mean in SolidJS?","confidence":0.95},{"answer":"SolidJS is suitable for building interactive web applications, single-page applications (SPAs), and progressive web apps. It supports server-side rendering with progressive hydration, error boundaries, suspense for async operations, and context-based state management. The framework also enables authoring custom web components for reusable UI elements.","source":"https://github.com/solidjs/solid","question":"What can I build with SolidJS?","confidence":0.9},{"answer":"SolidJS integrates with modern build tools like Vite and includes ecosystem libraries for state management (built-in Stores and Context), component libraries like Kobalte, and community packages like solid-primitives. The framework also works well with standard JavaScript libraries that directly manipulate the DOM, such as D3 for data visualization.","source":"https://github.com/solidjs/solid","question":"What build tools and ecosystem does SolidJS have?","confidence":0.85},{"answer":"No, SolidJS does not use a virtual DOM. Instead, it compiles JSX templates directly into real DOM nodes at build time. This direct compilation approach eliminates the overhead of virtual DOM diffing and contributes to SolidJS's performance advantages and smaller bundle size.","source":"https://github.com/solidjs/solid","question":"Does SolidJS use a virtual DOM?","confidence":0.95}]` | `[{"answer":"Svelte is an open-source UI framework that uses a compiler to convert declarative component code into efficient vanilla JavaScript that runs in the browser. Rather than shipping a runtime framework to users, Svelte moves the heavy lifting to build time, resulting in minimal, optimized code that surgically updates the DOM. This compiler-first approach produces smaller bundle sizes and better runtime performance compared to traditional runtime-based frameworks.","source":"https://svelte.dev","question":"What is Svelte and how does it work?","confidence":0.95},{"answer":"Yes, Svelte is a free, open-source project released under the MIT license. It is maintained by Vercel and a community of volunteer contributors, with no licensing fees, paid tiers, or commercial restrictions. Anyone can use, modify, and distribute Svelte for any project.","source":"https://github.com/sveltejs/svelte","question":"Is Svelte free and open source?","confidence":0.98},{"answer":"Svelte uses standard web technologies: HTML for structure, CSS for styling, and JavaScript for interactivity. Developers write components using these familiar languages without needing to learn a specialized syntax or framework-specific language extensions. TypeScript support is also available for developers who prefer static typing.","source":"https://svelte.dev","question":"What languages and technologies does Svelte use?","confidence":0.95},{"answer":"SvelteKit is a full-stack framework built on top of Svelte that handles routing, server-side rendering, static site generation, and deployment configuration. Use SvelteKit when building complete web applications that need server-side functionality, form handling, and data management; use standalone Svelte when building individual components or component libraries.","source":"https://svelte.dev","question":"What is SvelteKit and when should I use it?","confidence":0.93},{"answer":"Yes, Svelte receives consistent maintenance and updates from its development team and community. The project publishes monthly releases documenting new features across Svelte, SvelteKit, and related tooling, with recent focus on developer experience, TypeScript integration, async functionality, and tooling improvements.","source":"https://svelte.dev/blog","question":"Does Svelte have active development and regular updates?","confidence":0.92},{"answer":"Svelte consistently ranks highly in developer satisfaction surveys, including top positions in Stack Overflow and State of JavaScript surveys. It is praised for its approachable design and powerful capabilities, attracting developers across skill levels. The framework has a growing community supported by Svelte Society events and an active Discord channel.","source":"https://svelte.dev","question":"How popular is Svelte among developers?","confidence":0.9},{"answer":"Svelte's compile-time approach produces significantly smaller JavaScript bundle sizes compared to frameworks that ship runtime code to the browser. The compiler generates only the code needed for your specific components, resulting in faster initial page loads, better runtime performance, and reduced bandwidth consumption, particularly beneficial for users on slower connections or older devices.","source":"https://svelte.dev","question":"What are the main performance benefits of using Svelte?","confidence":0.92},{"answer":"SvelteKit includes adapters for major hosting platforms including Vercel, Netlify, AWS, and Node.js-based servers, allowing deployment as serverless functions or traditional server applications. Standalone Svelte components can be deployed anywhere JavaScript runs. The flexible adapter system enables deployment to virtually any modern hosting platform.","source":"https://svelte.dev","question":"What deployment and hosting options does Svelte support?","confidence":0.88}]` |
| description.long | A JavaScript library for constructing user interfaces using fine-grained reactivity, updating only what changes rather than diffing virtual DOMs. Emphasizes performance through reactive primitives and supports modern patterns like async handling, server-side rendering, hydration, and streaming. | A framework with an integrated compiler that lets developers create streamlined components using standard HTML, CSS, and JavaScript, minimizing runtime overhead in the browser. |
| features.capabilities | `{"paradigm":"Fine-grained reactivity with reactive primitives","bundle_size":"tiny","ssr_support":true,"virtual_dom":false,"component_model":true,"router_official":true,"state_management":true,"typescript_first":true,"signals_reactivity":true}` | `{"paradigm":"compiler-based component framework","bundle_size":"small","ssr_support":true,"virtual_dom":false,"component_model":true,"state_management":true,"typescript_first":false,"signals_reactivity":true}` |
| integrations.count | 50 | - |
| integrations.list | `[{"name":"Vite"},{"name":"Astro"},{"name":"Mapbox GL JS"},{"name":"Apollo GraphQL"},{"name":"TipTap"},{"name":"Popper.js"},{"name":"hCaptcha"},{"name":"Tailwind CSS"},{"name":"Monaco Editor"},{"name":"Spotify"},{"name":"Tawk.to"},{"name":"Playwright"},{"name":"Vercel Styled JSX"},{"name":"Web Components"},{"name":"solid-router"},{"name":"solid-element"},{"name":"solid-meta"},{"name":"solid-refresh"},{"name":"vite-plugin-solid"},{"name":"solid-styled-jsx"},{"name":"eslint-plugin-solid"},{"name":"babel-plugin-solid-labels"},{"name":"solid-tiptap"},{"name":"solid-popper"},{"name":"solid-dismiss"},{"name":"solid-js-form"},{"name":"solid-validation"},{"name":"solid-dnd-directive"},{"name":"solid-markdown"},{"name":"solid-apollo"},{"name":"solid-i18n"},{"name":"solid-bootstrap"},{"name":"previewjs"},{"name":"solid-map-gl"},{"name":"solid-services"},{"name":"solid-ui"},{"name":"solid-hcaptcha"},{"name":"solid-form-handler"},{"name":"solid-color"},{"name":"Flowbite SolidJS"},{"name":"solid-monaco"},{"name":"solid-spotify-embed"},{"name":"@thednp/solid-color-picker"},{"name":"vite-solid-svg"},{"name":"solid-feather-icon"},{"name":"solid-testing-library"},{"name":"solid-register"},{"name":"@playwright/experimental-ct-solid"},{"name":"LocateJS"},{"name":"Solid Developer Tools"}]` | - |
| language.primary | TypeScript | JavaScript |
| license.spdx | MIT | MIT |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"source":"https://svelte.dev","confidence":0.95,"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"web":true}` | `{"web":true}` |
| pricing | `{"type":"open_source","sourceUrl":"https://www.solidjs.com","retrievedAt":"2026-08-14T11:04:19.101Z"}` | `{"type":"open_source","freeTier":true,"sourceUrl":"https://svelte.dev","retrievedAt":"2026-08-14T15:28:27.792Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | open_source | open_source |
| pricing.price_level | free | free |
| pricing.transparent | yes | - |
| release.cadence_days | 12 | 3 |
| release.history | `[{"url":"https://github.com/solidjs/solid/releases/tag/solid-js%402.0.0-rc.3","date":"2026-08-26T06:59:59Z","type":"prerelease","version":"solid-js@2.0.0-rc.3"},{"url":"https://github.com/solidjs/solid/releases/tag/%40solidjs/web%402.0.0-rc.3","date":"2026-08-26T06:59:41Z","type":"prerelease","version":"@solidjs/web@2.0.0-rc.3"},{"url":"https://github.com/solidjs/solid/releases/tag/%40solidjs/universal%402.0.0-rc.3","date":"2026-08-26T07:00:05Z","type":"prerelease","version":"@solidjs/universal@2.0.0-rc.3"},{"url":"https://github.com/solidjs/solid/releases/tag/%40solidjs/signals%402.0.0-rc.3","date":"2026-08-26T06:59:47Z","type":"prerelease","version":"@solidjs/signals@2.0.0-rc.3"},{"url":"https://github.com/solidjs/solid/releases/tag/%40solidjs/html%402.0.0-rc.3","date":"2026-08-26T07:00:02Z","type":"prerelease","version":"@solidjs/html@2.0.0-rc.3"},{"url":"https://github.com/solidjs/solid/releases/tag/%40solidjs/h%402.0.0-rc.3","date":"2026-08-26T06:59:50Z","type":"prerelease","version":"@solidjs/h@2.0.0-rc.3"},{"url":"https://github.com/solidjs/solid/releases/tag/%40solidjs/element%402.0.0-rc.3","date":"2026-08-26T06:59:56Z","type":"prerelease","version":"@solidjs/element@2.0.0-rc.3"},{"url":"https://github.com/solidjs/solid/releases/tag/%40solidjs/diagnostics%402.0.0-rc.3","date":"2026-08-26T06:59:44Z","type":"prerelease","version":"@solidjs/diagnostics@2.0.0-rc.3"},{"url":"https://github.com/solidjs/solid/releases/tag/%40solidjs/compiler%402.0.0-rc.3","date":"2026-08-26T07:00:08Z","type":"prerelease","version":"@solidjs/compiler@2.0.0-rc.3"},{"url":"https://github.com/solidjs/solid/releases/tag/%40solidjs/babel-plugin%402.0.0-rc.3","date":"2026-08-26T06:59:53Z","type":"prerelease","version":"@solidjs/babel-plugin@2.0.0-rc.3"},{"url":"https://github.com/solidjs/solid/releases/tag/v2.0.0-rc.0","date":"2026-08-13T17:53:35Z","type":"prerelease","version":"v2.0.0-rc.0"},{"url":"https://github.com/solidjs/solid/releases/tag/v2.0.0-beta.0","date":"2026-03-03T23:09:19Z","type":"prerelease","version":"v2.0.0-beta.0"},{"url":"https://github.com/solidjs/solid/releases/tag/v1.9.0","date":"2024-09-24T21:32:04Z","type":"stable","version":"v1.9.0"},{"url":"https://github.com/solidjs/solid/releases/tag/v1.8.0","date":"2023-10-09T23:33:49Z","type":"stable","version":"v1.8.0"},{"url":"https://github.com/solidjs/solid/releases/tag/v1.7.0","date":"2023-03-30T06:33:07Z","type":"stable","version":"v1.7.0"},{"url":"https://github.com/solidjs/solid/releases/tag/v1.6.0","date":"2022-10-20T08:28:59Z","type":"stable","version":"v1.6.0"},{"url":"https://github.com/solidjs/solid/releases/tag/v1.5.0","date":"2022-08-26T08:44:21Z","type":"stable","version":"v1.5.0"},{"url":"https://github.com/solidjs/solid/releases/tag/v1.4.0","date":"2022-05-12T20:06:15Z","type":"stable","version":"v1.4.0"},{"url":"https://github.com/solidjs/solid/releases/tag/v1.3.0","date":"2022-01-06T10:25:14Z","type":"stable","version":"v1.3.0"},{"url":"https://github.com/solidjs/solid/releases/tag/v1.2.0","date":"2021-10-26T07:04:52Z","type":"stable","version":"v1.2.0"}]` | `[{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.10","date":"2026-08-20T19:20:58Z","type":"stable","version":"svelte@5.56.10"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.9","date":"2026-08-12T18:12:41Z","type":"stable","version":"svelte@5.56.9"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.8","date":"2026-07-24T22:09:14Z","type":"stable","version":"svelte@5.56.8"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.7","date":"2026-07-20T19:31:02Z","type":"stable","version":"svelte@5.56.7"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.6","date":"2026-07-16T22:26:47Z","type":"stable","version":"svelte@5.56.6"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.5","date":"2026-07-14T12:03:32Z","type":"stable","version":"svelte@5.56.5"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.4","date":"2026-06-23T18:48:43Z","type":"stable","version":"svelte@5.56.4"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.3","date":"2026-06-07T18:30:29Z","type":"stable","version":"svelte@5.56.3"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.2","date":"2026-06-04T20:33:04Z","type":"stable","version":"svelte@5.56.2"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.1","date":"2026-06-01T22:42:27Z","type":"stable","version":"svelte@5.56.1"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.0","date":"2026-05-29T22:00:29Z","type":"stable","version":"svelte@5.56.0"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.55.10","date":"2026-05-27T21:48:44Z","type":"stable","version":"svelte@5.55.10"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.55.9","date":"2026-05-20T10:08:35Z","type":"stable","version":"svelte@5.55.9"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.55.8","date":"2026-05-18T16:45:32Z","type":"stable","version":"svelte@5.55.8"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.55.7","date":"2026-05-14T19:07:37Z","type":"stable","version":"svelte@5.55.7"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.55.6","date":"2026-05-14T18:04:38Z","type":"stable","version":"svelte@5.55.6"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.55.5","date":"2026-04-23T23:48:48Z","type":"stable","version":"svelte@5.55.5"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.55.4","date":"2026-04-14T13:26:32Z","type":"stable","version":"svelte@5.55.4"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.55.3","date":"2026-04-10T13:24:09Z","type":"stable","version":"svelte@5.55.3"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.55.2","date":"2026-04-07T19:53:53Z","type":"stable","version":"svelte@5.55.2"}]` |
| security.disclosure_policy | yes | yes |
| security.scorecard | 5.8 | 7.9 |
| security.vulnerabilities | `{"count":1,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=solid-js&per_page=100","last_12m":0,"max_severity":"HIGH"}` | `{"count":14,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=svelte&per_page=100","last_12m":12,"max_severity":"HIGH"}` |

## Capabilities (Frontend UI Frameworks)

| Capability | SolidJS | Svelte |
|---|:--:|:--:|
| **Core** |  |  |
| Paradigm | Fine-grained reactivity with reactive primitives | compiler-based component framework |
| Reusable component model | ✓ | ✓ |
| **Rendering** |  |  |
| Virtual DOM | ✗ | ✗ |
| Signals / fine-grained reactivity | ✓ | ✓ |
| SSR support | ✓ | ✓ |
| **DX** |  |  |
| First-class TypeScript | ✓ | ✗ |
| **State** |  |  |
| Built-in state management | ✓ | ✓ |
| **Ecosystem** |  |  |
| Official router | ✓ | - |
| **Performance** |  |  |
| Runtime size | Tiny (<10kb) | Small (10–40kb) |

*Source: Vioscale. Generated 2026-09-01T14:33:38.627Z. "-" = undocumented, not absent.*