CodeSandbox Online IDE

CodeSandbox is a cloud-based development environment and online IDE enabling developers to code, build, and deploy web applications entirely in the browser. Founded in 2017 by Ives van Hoorne (CEO) and Bas Buursma in Amsterdam, Netherlands. Raised over $30 million from EQT Ventures, Kleiner Perkins, Greenoaks. Serves over 4.5 million developers monthly. Key features: cloud development: full-featured development environment in the browser. No local setup required. Instant project bootstrapping. Development containers (Devboxes): complete Linux environments with full root access. Run any language, framework, or tool. Pre-configured with Docker. Code collaboration: real-time co-editing with live cursors (like Google Docs for code). Multiple developers editing simultaneously. Follow mode, shared terminals, inline comments. Devbox: containerized development environment mirroring production. Supports any language (JavaScript, Python, Go, Rust, PHP) via Nix. Reproducible and shareable. Templates: pre-built templates for React, Vue, Angular, Svelte, Next.js, Nuxt, Vite, Node.js. Import from GitHub. Live preview: instant hot-reloading preview alongside the code. Auto-refresh on save. Deployment: one-click deployment to Vercel, Netlify, GitHub Pages, Cloudflare Pages. Custom domains. Public sandboxes: share and discover community sandboxes. Fork and remix any public project. Embed in blog posts and documentation. GitHub integration: import repositories, commit changes, create pull requests from the browser. MicroVM technology: each sandbox runs in a lightweight virtual machine for isolation. Fast boot times (under 5 seconds). Nix packages. AI assistant: AI-powered code generation and assistance. JavaScript/TypeScript. Proprietary with free tier.