Replit is a browser-based development platform that combines a full IDE, hosting, and AI assistance into a single environment — no local setup required.

Replit Core Features

• Browser IDE: Full development environment accessible from any device
• Instant hosting: Every project gets a live URL automatically
• 50+ languages: Python, JavaScript, TypeScript, Go, Rust, Java, and more
• Collaboration: Real-time multiplayer coding like Google Docs
• Database: Built-in key-value store and PostgreSQL
• Secrets: Secure environment variable management

AI Features

Replit AI Chat

• Ask coding questions in context of your project
• Get explanations of code you don't understand
• Debug errors with AI-assisted troubleshooting
• Generate code snippets and functions

Ghostwriter (Code Completion)

• Real-time code suggestions as you type
• Context-aware completions that understand your project
• Multi-line suggestions for common patterns
• Tab to accept, keep typing to ignore

AI Agent

• Describe what you want to build in plain English
• Agent writes code, creates files, installs packages
• Handles full-stack development autonomously
• You review, approve, and guide the process

Getting Started

1. Create a Replit account at replit.com
2. Click "Create Repl" to start a new project
3. Choose a language or template
4. Start coding — your project is live instantly
5. Use AI features via the chat panel or inline suggestions

Understanding the Workspace

• File tree: All project files in the left sidebar
• Editor: Main coding area with syntax highlighting
• Console/Shell: Run commands and see output
• Preview: Live preview of web applications
• AI Chat: AI assistant panel for help and generation

Named Example: Replit's 100 Million Apps Milestone

By 2024, over 100 million applications had been created on Replit — a significant portion by people who had never coded before. A notable example is a high school student who built a working inventory management system for their parent's restaurant using Replit AI Agent without prior programming experience, demonstrating how browser-based AI development removes traditional barriers to software creation.

Common Pitfall: New Replit users often start too large — trying to describe a complex multi-feature app in a single prompt. The Agent works best when you build iteratively: start with the core feature, confirm it works, then add secondary features one at a time.

Best Practice: Before starting a new Repl, spend 2 minutes writing a brief specification document in plain text. Include: what the app does, who uses it, the 3 most important features, and any technology preferences. Paste this spec as your first message to the AI — it dramatically reduces the number of correction iterations needed.