Agent 3
                
                Replit Agent 3 is the most autonomous, AI-powered builder yet for creating production-ready applications entirely through natural-language prompts. You describe the app or website idea, and Agent automatically handles everything: setting up the full-stack environment, designing interfaces, configuring databases, managing dependencies, and integrating authentication or third-party services like Stripe or OpenAI. It offers two development modes: a visual-first “Start with a design” option that generates a clickable prototype in just minutes before enabling full functionality, or a “Build the full app” mode that constructs a functioning application, including frontend, backend, and integrations, in around 10 minutes. Agent 3 also self-tests within a browser workflow, identifying bugs, fixing them, and rerunning tests in a continuous reflection loop that is up to 3x faster and 10x more cost-efficient than traditional testing models.
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                Goose
                
                Goose (also known as codename goose) is an open-source, on-machine AI agent designed to automate engineering tasks directly within your terminal or integrated development environment (IDE). Operating locally, it efficiently executes tasks such as code generation, debugging, and deployment, allowing developers to focus on higher-level problem-solving. Goose's extensible architecture enables customization with preferred large language models (LLMs) and integration with external APIs, enhancing its capabilities to suit diverse project requirements. By autonomously handling complex tasks, Goose streamlines the development process, increasing productivity and reducing manual effort. Developers have praised Goose for its ability to manage tasks like updating dependencies, running tests, and automating code migrations, highlighting its effectiveness in real-world applications. 
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                GitHub Copilot
                
                GitHub Copilot is an AI-powered coding companion that helps developers write, debug, and refactor code faster than ever. Built directly into popular IDEs like VS Code, JetBrains, and Visual Studio, Copilot suggests context-aware code completions and automates repetitive tasks. With Agent Mode, Copilot can plan, write, test, and even submit pull requests—acting like an onboarded team member that understands your repositories. Developers can toggle between advanced models such as GPT-5, Claude Opus 4.1, and Gemini 2.5 Pro to balance speed and depth. Its Copilot Chat and Spaces features bring code, documentation, and project notes together for richer, team-tailored insights. Whether you’re building solo or leading an enterprise project, Copilot enhances productivity and creativity across the entire software lifecycle.
The GitHub Copilot coding agent streamlines development by automating repetitive and time-consuming tasks, allowing developers to focus on more complex coding.
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                Firebase Studio
                
                Firebase Studio is an AI-powered full-stack development platform designed to accelerate the entire development lifecycle, from backend and frontend building to mobile app creation. It integrates AI agents like Gemini to assist in tasks such as coding, debugging, testing, and documentation. With support for various tech stacks and seamless integration with repositories from GitHub, GitLab, and Bitbucket, Firebase Studio helps developers quickly create, deploy, and monitor apps. The platform is optimized for building and testing full-stack applications, providing built-in web previews and emulators for real-time app visualization.
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