Harness Manager

Harness Manager is a native macOS application that manages coding tools, discovers MCPs and skills, and compares AI models.

Harness Manager is a native Mac application designed to manage your AI coding stack in one place. It lets you see installed tools, check running processes, review updates, discover new skills and Model Context Protocols, and compare AI models across multiple ranking collections. The app supports tools and platforms like Claude Code, Codex, Gemini CLI, Cursor, Warp, and others. It is built for developers who want to track their AI configuration, provider setups, and updates without managing multiple windows. The project is free and open source under the Apache 2.0 license.

Harness Manager at a glance

Best for: Software engineer
Runs on: macOS
Pricing: Free and open source
Released: September 2026
Category: AI coding tool
Website: harnessmanager.devmesh.xyz

Key features

Manage coding tools and AI stacks
Discover skills and MCPs
Compare models across ranking collections
Track tool and software updates
View provider configuration and MCP servers
Inspect running processes
Read the harness briefing ecosystem updates

Use it for

Managing an AI coding tool stack
Discovering new tools, MCPs, and skills
Comparing AI models across benchmarks
Tracking software updates and running processes

Alternatives to Harness Manager

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Fusion Harness — Run 2 to 5 models simultaneously against the same working directory with a single-writer invariant.
Durable Harness — Recovers sessions from logs after crashes and prevents duplicate tool calls.

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