Harnesses

Meta's terminal coding agent, launched in beta with Muse Spark 1.2; it runs a main agent alongside persistent background subagents.

Released

Aug 5, 2026

Interface

CLI

Pricing

Subscription

Mistral's open-source command-line coding assistant, launched with Devstral 2 and usable in IDEs over the Agent Client Protocol.

Released

Dec 9, 2025

Interface

CLI

Pricing

Usage-based

Google's agentic development platform: a desktop app for running several agents, an agentic IDE, a CLI and a Python SDK.

Released

Nov 18, 2025

Interface

DESKTOP, IDE, CLI

Pricing

Free

Factory's model-agnostic software development agent, available in a desktop app, CLI and SDK with cloud and local background agents.

Released

Sep 25, 2025

Interface

DESKTOP, CLI

Pricing

Subscription

A minimal open-source coding agent from the SWE-agent team: a roughly 100-line agent class whose only tool is bash, used widely as a benchmark baseline.

Released

Jul 21, 2025

Interface

CLI

Pricing

Bring your own key

AWS's spec-driven agentic IDE, also available as a CLI and on the web, with an Auto router or a manually chosen model.

Released

Jul 14, 2025

Interface

IDE, CLI, WEB

Pricing

Subscription

Google's open-source terminal agent for Gemini models, with Search grounding, file and shell tools, and MCP support.

Released

Jun 25, 2025

Interface

CLI

Pricing

Free

An open-source coding agent for the terminal, desktop and IDE that connects to 75+ model providers, including local models.

Released

May 14, 2025

Interface

CLI, DESKTOP, IDE

Pricing

Bring your own key

Anthropic's agentic coding tool: reads a codebase, edits files and runs commands, available in the terminal, IDE extensions, a desktop app and the browser.

Released

Feb 24, 2025

Interface

CLI, IDE, DESKTOP, WEB

Pricing

Subscription

An open-source, Rust-built AI agent with a desktop app, CLI and API, working with 15+ model providers and 70+ MCP extensions.

Released

Sep 10, 2024

Interface

DESKTOP, CLI

Pricing

Bring your own key

An open-source coding agent available as a VS Code extension, JetBrains plugin, CLI, desktop app and SDK, not tied to any one model provider.

Released

Jul 28, 2024

Interface

IDE, CLI, DESKTOP

Pricing

Bring your own key

An open-source, self-hostable platform for running coding agents, with a web UI, CLI and Docker sandboxes.

Released

Jun 4, 2024

Interface

WEB, CLI

Pricing

Bring your own key

An open-source AI pair-programming tool for the terminal that edits code in your local git repo.

Released

Jun 7, 2023

Interface

CLI

Pricing

Bring your own key

GitHub's AI coding assistant, with agent mode in VS Code, Visual Studio, JetBrains, Eclipse and Xcode, the Copilot CLI and a cloud agent that opens pull requests.

Released

Jun 21, 2022

Interface

IDE, CLI, WEB

Pricing

Subscription

OpenAI's coding agent, available as the open-source Codex CLI, an IDE extension, a desktop app and Codex Cloud on the web.

Released

Undated

Interface

CLI, IDE, DESKTOP, WEB

Pricing

Subscription

An AI code editor with a CLI and cloud agents, offering models from OpenAI, Anthropic, Google, SpaceXAI and its own Composer models.

Released

Undated

Interface

IDE, CLI, WEB

Pricing

Subscription

Cognition's AI IDE (formerly the Windsurf Editor), with the local Devin agent, delegation to cloud Devin and an agent command center.

Released

Undated

Interface

IDE

Pricing

Subscription

xAI's coding agent: a terminal TUI, headless mode and Agent Client Protocol integration, plus an app-building mode in the Grok web and mobile apps.

Released

Undated

Interface

CLI, WEB

Pricing

Subscription

JetBrains' coding agent, available as a CLI, inside JetBrains IDEs, and in GitHub Actions and GitLab CI/CD.

Released

Undated

Interface

CLI, IDE

Pricing

Subscription

An open-source coding agent for VS Code, JetBrains, the CLI and a cloud agent, with access to 500+ models.

Released

Undated

Interface

IDE, CLI, WEB

Pricing

Bring your own key

Alibaba's open-source terminal coding agent, with a desktop app, editor plugins and SDKs, supporting Qwen, OpenAI, Anthropic, Gemini and local models.

Released

Undated

Interface

CLI, DESKTOP, IDE, WEB

Pricing

Bring your own key

An agentic development environment built around a terminal, with a built-in coding agent, an agent CLI for any terminal and cloud agents.

Released

Undated

Interface

DESKTOP, CLI

Pricing

Subscription

An open-source code editor with a built-in agent panel that runs hosted or bring-your-own-key models and external agents such as Claude Agent and Codex CLI.

Released

Undated

Interface

IDE

Pricing

Bring your own key