GitHub Copilot
VS Code/JetBrains extension. Most widely used.
Free / Pro $10/mo
Tier 1: The Big Three
Tier 2: Major Contenders
OpenClaw
Open-source CLI framework. Skill-based. Pay per use.
Pay per use
Cline
Open-source VS Code agent. 95K+ GitHub stars. 2.5M monthly devs.
Free
OpenCode
Open-source terminal agent.
Free
Windsurf
AI-native IDE. Multi-agent.
$15/mo
Codex (OpenAI)
Cloud-native agent. GitHub integration.
Pay per usage
Tier 3: Notable
Aider
Git-aware CLI assistant.
Free
Devin
Autonomous AI engineer.
$20/mo
Roo Code
VS Code extension.
Free
Playcode Agent
Cloud-based coding. Free tier available.
Free tier
KiloCode
VS Code extension. Multi-model support.
Free
Continue.dev
Open-source extension.
Free