Coding

Google AI Studio is a browser workspace for experimenting with Gemini prompts and building AI prototypes. It exposes model controls and multimodal inputs that are useful when comparing responses or planning an API integration. Free access is rate limited and does not cover every model or capability.

Bolt builds websites and web apps from natural-language instructions in a browser workspace. You can preview the result, revise the interface and work with project files. Its token allowance makes the free plan useful for testing an idea or making a modest prototype before investing in a larger build.

Cursor is an AI code editor for working directly with project files, asking questions about a codebase and requesting changes through an agent. Its free Hobby plan suits occasional coding assistance and trying its Composer workflow. This entry requires downloading a desktop editor rather than using a standalone browser chatbot.

GitHub's coding assistant explains code, proposes changes and supplies inline suggestions across supported editors and GitHub surfaces. The Free plan is useful for occasional debugging, learning a language or trying AI assistance on an existing repository. Editor integration requires installing a supported extension.

GroqCloud provides a browser playground and developer API for trying supported models on Groq's inference infrastructure. It is useful for testing prompts, inspecting model behavior and planning an application integration. The free developer tier has model-specific request and token limits, so availability is best checked in the account console.

Hugging Face Spaces hosts interactive demos contributed by model developers and the community. You can try tasks such as image generation, speech processing or document analysis in a browser and inspect public source code. It is a useful discovery platform for experimental models, although individual demos differ greatly in reliability.

Lovable is a browser app builder that uses conversational instructions to create and revise applications. It provides a hosted development workflow for people exploring product ideas without starting from an empty codebase. A small recurring build-credit allowance supports experimentation, while larger projects need careful attention to usage.

OpenRouter offers one interface and API for trying models from multiple providers. Its free-model catalog is useful for comparing responses, experimenting with code generation and testing integrations before paying for inference. Choose models explicitly marked free, or use the free router; the wider catalog also includes paid models.

Replit combines a browser coding environment with an AI agent that can turn instructions into apps and make targeted changes. Its Starter plan supports limited daily experimentation through Lite build. It is useful for small prototypes, especially when you want an editor and preview in one place.

Vercel's v0 turns prompts into web interfaces and applications, with a visual design mode and a path to deployment. It is particularly useful for exploring UI ideas and iterating on an initial implementation. The free plan provides recurring credits, although its daily message ceiling keeps sessions short.

A catalog of hosted model endpoints and interactive previews for developers exploring language, reasoning, and other AI capabilities.

Cohere's developer playground for experimenting with its language models and retrieval-oriented AI capabilities before integration.

An AI coding environment with autocomplete, inline edits, and agent-assisted changes across a codebase. The main coding experience requires an installed editor.

AWS's coding assistant helps explain code, implement changes, and work with development tasks in supported editors and command-line tools.

An AI code-review service that comments on pull requests and helps developers inspect proposed changes.

Google's asynchronous coding agent works on repository tasks in a cloud environment and proposes changes for review.

An AI coding environment that combines code completion with agent-assisted development and task execution.

Build AI applications and document-backed workflows using a visual development interface and configurable model providers.

A no-code workspace for building apps, forms, workflows, and agents, with AI-assisted creation and data features.

A visual website builder with AI-assisted page creation and publishing to a Framer-hosted address.

Google's hosted notebook environment lets you write Python and experiment with machine-learning models without maintaining a local setup.

Build an AI agent that answers questions from your supplied content and embed it in a website or support workflow.

A visual platform for building conversational AI agents, connecting knowledge, and testing customer-facing conversations.

An AI-assisted website and business toolkit that generates a starter site and provides basic marketing and business-chat features.

Google Teachable Machine lets you train and test small image, sound, or pose classifiers in your browser, then export models for your projects.

Sourcery reviews code changes and suggests fixes, with pull-request summaries and diagrams to help developers understand a change. Its free offering is aimed at work on public repositories.