Puter
One subscription, unlimited apps running in the browser
Puter.js is a serverless, keyless JavaScript SDK that provides a backend for web applications, including those generated by AI coding tools. It solves the problem of configuring and deploying backend infrastructure by offering authentication, cloud storage, a NoSQL database, and AI model access directly from frontend code through a single script tag, with no API keys to manage.
The platform includes an AI Gateway that provides access to over 500 models from providers such as OpenAI, Claude, Gemini, and Grok. Core capabilities include Auth, Storage, Database, Serverless Workers for running backend logic on demand, and Networking. Puter.js is designed to work with any modern JavaScript framework, including React, Next.js, Vue, Angular, Svelte, and Astro, and is compatible with AI coding assistants such as Claude Code, Codex, Cursor, and GitHub Copilot.
Puter.js is intended for developers building web applications, whether the code is written by AI or by hand. It is packaged under a "User-Pays" model, where developers pay nothing for infrastructure regardless of user count. Each signed-in user's Puter account includes a free allowance for storage, database, and AI usage, and users pay Puter directly for any overage. App-level resources, such as serverless workers, can run on the developer's own account.
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