Front-end and full-stack web frameworks, CSS frameworks and UI libraries for building web applications.
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AstroWeb Frameworks & UI LibrariesAstro is an open-source, MIT-licensed framework for content-driven sites using islands architecture, shipping minimal JavaScript by default; its team joined Cloudflare in January 2026.Open sourceSoftware
AstryxWeb Frameworks & UI LibrariesAstryx is an MIT-licensed design system from Meta for React 19 with 150+ components, seven themes, dark mode, page templates and a CLI. Agent docs and a hosted MCP server let AI coding tools use the same reference. Currently in Beta.Open sourceWeb platform
BagistoERP & Business SuitesMIT-licensed e-commerce application on Laravel 13 and Vue.js from Webkul, with seven product types, channels, nine core payment methods, RMA, GDPR and EU price rules. Self-host via Composer or Docker, or use paid Bagisto Cloud.Open sourceSelf-hostedFreemium
Builder.ioCMS & Website BuildersBuilder.io is a hosted visual editor and headless CMS that lets teams build pages from their own components. The MIT-licensed repository holds the SDKs for React, Vue, Svelte, Solid, Qwik, Angular and React Native, plus examples and plugins.Open sourceWeb platformFreemium
c15tWeb Frameworks & UI Librariesc15t is an Apache-2.0 consent management platform for JavaScript apps: banner, preference dialog and consent-gated vendor scripts, with Google Consent Mode v2, IAB TCF 2.4, GPP and a hosted (Inth) or self-hosted backend.Open sourceSelf-hostedFreemium
FumadocsDocumentation & ReferencesFumadocs is a composable documentation framework for React-based sites: a headless core, a default UI theme, MDX and other content sources, search integrations, OpenAPI pages and AI-friendly output, all MIT licensed.Open sourceSoftware
IronCalcOffice & PresentationsIronCalc is an MIT and Apache 2.0 spreadsheet engine in Rust with about 500 functions, .xlsx support, a browser app, Python, Node.js and WebAssembly bindings, and a Docker Compose setup for self-hosting.Open sourceSelf-hosted
MedusaERP & Business SuitesMedusa is an open-source commerce backend for Node.js with products, carts, orders, payments and inventory as modules, a React admin and Store and Admin APIs. Self-host it with PostgreSQL and Redis or run it on Medusa Cloud.Open sourceSelf-hostedFreemium
Next.jsWeb Frameworks & UI LibrariesNext.js is an open-source React framework maintained by Vercel for full-stack web applications. It adds file-based routing, Server Components, caching, image and font optimization, and deploys as a Node.js server, Docker image or static export.Open sourceSelf-hosted
NordcraftCMS & Website BuildersNordcraft is a visual web builder with a canvas editor, components, formulas, SSR, branches, an AI assistant and an MCP server. The runtime and backend are Apache-2.0; hosting is free, Pro from $9 per project.Open sourceSelf-hostedFreemium
NuxtWeb Frameworks & UI LibrariesNuxt is an open-source, MIT-licensed full-stack framework for Vue with file-based routing, server rendering and a large module ecosystem; its core team joined Vercel in 2026.Open sourceSoftware
Open MercatoERP & Business SuitesOpen Mercato is an MIT-licensed TypeScript framework for business applications. A new app starts with CRM, catalog, sales, warehouse and portal modules, multi-tenancy and RBAC, plus AGENTS.md rules and skills for Claude Code, Codex and Cursor.Open sourceSelf-hostedFreemium
QuickLiquidWeb Frameworks & UI LibrariesQuickLiquid is an MIT-licensed UI effects library for React and vanilla JavaScript with SVG backdrop refraction, glass materials, springs and a CSS fallback.Open sourceSelf-hosted
RefineWeb Frameworks & UI LibrariesRefine (Refine CORE) is an MIT-licensed headless React meta-framework for CRUD-heavy apps, with hooks for data, auth, access control, routing, realtime and i18n, and integrations for Ant Design, Material UI, Mantine, Chakra UI and shadcn/ui.Open sourceSelf-hostedFreemium
ReflexWeb Frameworks & UI LibrariesReflex builds full-stack web apps in Python: components compile to a React frontend, while state classes and event handlers run on a FastAPI-based backend over WebSockets. Apache-2.0 framework, with optional Reflex Cloud hosting and a paid AI Builder.Open sourceSelf-hostedFreemium
RemixWeb Frameworks & UI LibrariesRemix is an open-source, MIT-licensed full-stack React framework emphasizing nested routing, server-side data loading and Web API standards, maintained by Shopify.Open sourceSoftware
RuneWeb Frameworks & UI LibrariesRune is an MIT-licensed, pre-release Rust UI framework from Anomaly with its own wgpu renderer, Taffy layout, Parley text and spring animation, targeting macOS, Windows, Linux and WebGPU, with headless rendering for agents.Open sourceSoftware
SvelteKitWeb Frameworks & UI LibrariesSvelteKit is the application framework for Svelte, with file-based routing, data loading, form actions, configurable rendering, and deployment adapters.Open sourceSoftware
TailwindCSSWeb Frameworks & UI LibrariesTailwind CSS is a free, open-source utility-first CSS framework for building custom designs directly in markup; Tailwind Labs joined Shopify in September 2026 while the framework stays MIT-licensed.CommercialSoftwareOpen source
tldrawWeb Frameworks & UI Librariestldraw is a source-available TypeScript SDK for embedding an infinite canvas in React apps, with custom shapes, an Editor API, self-hosted multiplayer sync and starter kits. Free in development; production needs a license key.CommercialSelf-hostedFreemium
ToolpadWeb Frameworks & UI LibrariesToolpad is MUI's MIT-licensed set of React components for dashboards and internal tools; the repository says it is no longer actively maintained.Open sourceSelf-hostedExplore collections with tools relevant to this category, grouped by deployment, source model or workload.
19 matching tools from this category
12 matching tools from this category
10 matching tools from this category
Web frameworks and UI libraries give developers the routing, rendering, data loading and styling building blocks for web applications. The category spans full-stack meta-frameworks with server rendering, static site generators for content sites, utility CSS frameworks and component or effects libraries. Choosing one fixes the programming model, hosting options and hiring pool for years, which sets it apart from a CMS or low-code builder that hides the code.
What belongs in this category: A project fits here when developers write application code on top of it to build web interfaces or full-stack apps, rather than configuring pages in a hosted builder or CMS.
iThub lists 21 tools in Web Frameworks & UI Libraries. 19 of 21 are open source, 12 of 21 can be self-hosted, 21 of 21 have a free, freemium or open-source pricing model and 10 of 21 offer an API.
Compare Next.js and Astro →Browse all web frameworks →Explore CMS and website builders →
Use the resources that match your decision stage. Profile data and linked sources were refreshed through November 11, 2026.
