AI for Developers
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Best Plandex alternatives

5 tools developers use instead of Plandex, ranked by popularity. 5 offer a free plan and 3 are open source. Updated October 2026.

Free Open source Clear Showing 1–5 of 5
  1. Claude Code logo

    Claude Code

    Free plan

    Anthropic's agentic coding tool, running in the terminal, IDE, desktop app, and browser, reading your codebase and editing files with explicit approval.

  2. OpenAI Codex logo

    OpenAI Codex

    Free plan

    OpenAI's cloud-based autonomous coding agent, powered by the GPT-5 family, reading a codebase and opening pull requests from written instructions.

  3. OpenCode logo

    OpenCode

    Free Open source

    Open-source terminal coding agent with a TUI that works with any model provider, including local models, and supports LSP, MCP and custom agents.

  4. Codename Goose logo

    Codename Goose

    Free Open source

    Open-source AI agent from Block, runnable as a desktop app or CLI, connecting to external systems via MCP and now governed by the Agentic AI Foundation.

  5. Gemini CLI logo

    Gemini CLI

    Free Open source

    Google's open-source terminal coding agent built on Gemini models with a 1M-token context window. Shut down for free consumer accounts June 18, 2026.