Windsurf is an AI-native code editor from Codeium, built as a fork of VS Code around an agentic assistant called Cascade. It sits at roughly #21 in real-world usage (about 4.9% share), appealing to developers who want an AI agent capable of carrying out multi-step, multi-file changes rather than just single-line autocomplete.
📌 Quick facts
Type: AI coding agent / AI-native editor
Made by: Codeium (Windsurf)
License: Freemium (free tier; paid Pro/Teams plans)
Platforms: Windows, macOS, Linux
Primary use case: Agentic, multi-file AI-assisted coding
Key features
- "Cascade" agent plans and executes multi-step coding tasks across multiple files in one flow
- "Flows" keep the developer in the loop, showing proposed diffs before changes are applied
- Built as a fork of VS Code, so most existing extensions and keybindings still work
- Understands whole-codebase context rather than just the currently open file
- Inline AI chat and autocomplete, built on Codeium's original completion engine
- Can propose and run terminal commands as part of an agentic task, with user approval
Getting started
# 1. Go to windsurf.com and download the installer for your OS
# 2. Sign in with an email or SSO account
# 3. Free tier available; Pro/Teams unlock higher usage limits
🎯 Best for: developers who want an agentic AI pair-programmer capable of larger, multi-file changes — while still reviewing and approving each step — rather than a simple autocomplete-only assistant.