Best open-source coding agent

Short answer: Cline is our initial pick for open-source coding agent, with OpenCode as the runner-up, based on verified features and pricing (hands-on tests coming).

⚠ Initial picks, hands-on tests coming. No scores yet: we only publish scores from real test runs. Last checked 2026-10-17.

All picks have public source code; licences shown where verified.

The picks

  1. Cline

    Open-source agent inside VS Code

    Pricing not yet verified

    open sourcefree tierCoding agent (editor extension)
  2. OpenCode

    Free terminal agent with any model

    Pricing not yet verified

    open sourcefree tierTerminal coding agent
  3. Aider

    Bring-your-own-key terminal coding

    Pricing not yet verified

    open sourcefree tierTerminal coding agent
  4. OpenHands

    Self-hosted autonomous agents

    Pricing not yet verified

    open sourcefree tierAutonomous coding agent
  5. Goose

    Local, extensible agent with MCP

    Pricing not yet verified

    open sourcefree tierLocal agent

FAQ

What is the best open-source coding agent?

Cline is our initial pick for open-source coding agent, with OpenCode as the runner-up, based on verified features and pricing (hands-on tests coming).

Which of these have a free tier?

Verified free tier: Cline, OpenCode, Aider, OpenHands, Goose.

Which are open source?

Cline (Apache-2.0), OpenCode (MIT), Aider (Apache-2.0), OpenHands (MIT), Goose (Apache-2.0).

Are these rankings paid?

No. Rankings are never for sale. These are initial picks from verified features and pricing; hands-on test scores will be published after real test runs.

Related rankings

Vibe Coding

Best AI app builder for beginners

#1 Lovable

Vibe Coding

Best AI code editor

#1 Cursor

Vibe Coding

Best free AI coding tools

#1 Gemini CLI

Vibe Coding

Best terminal coding agent

#1 Claude Code

All Vibe Coding tools →