Claude Code is Anthropic's terminal-based AI coding agent — not a traditional windowed editor, but an agent that reads your whole codebase, plans multi-step changes, and executes them with your review. It's tied for #13 in real-world usage at about 9.7% share, reflecting how fast agentic AI tools have been adopted alongside traditional editors.
📌 Quick facts
Type: Terminal-based AI coding agent (not a windowed editor)
Made by: Anthropic
License: Freemium via Claude apps/subscription; pay-as-you-go via API
Platforms: Windows, macOS, Linux (runs in any terminal)
Primary use case: Reading and reasoning over a whole repository, then planning and making multi-file changes with developer review, integrated with git
Key features
- Whole-codebase context — reads and reasons about an entire project before proposing changes
- Multi-step planning and execution — proposes edits across many files, applied with your approval
- Deep git integration — diffs, commits, and pull-request creation as part of its normal workflow
- Self-correcting — runs tests/build commands itself and iterates when something fails
- Terminal-native — works alongside whatever editor you already use, no separate window to learn
- Extensible via custom tools/skills and MCP servers for project-specific workflows
Getting started
Install it via npm, or download it from claude.com/product/claude-code:
# Requires Node.js
npm install -g @anthropic-ai/claude-code
claude
Run claude inside any project folder — it opens an interactive terminal session where you type instructions in plain English.
🎯 Best for: Real, existing codebases where the task is "understand this and change it correctly," rather than greenfield boilerplate — it pairs with, rather than replaces, a normal editor.