OpenHarness

OS-like agent runtime that sits between the model and your application. LobeHub's Chief Agent Operator hires agents from a 273K skill marketplace and runs them 24/7 in the cloud, reporting through Slack, Discord, and other platforms. Model as CPU, context window as RAM.

Nous Research's open-source autonomous AI agent. Runs as a persistent daemon on your own infrastructure, connects to 16+ messaging platforms (Telegram, Discord, Slack, WhatsApp), and writes its own reusable skills from experience. Model-agnostic — Anthropic, OpenAI, Google, DeepSeek, Ollama.

Open-source AI agent framework with a complete runtime, CLI, backend services, and web dashboard. Multi-model support (GPT-4o, Claude, Gemini, DeepSeek) with native Telegram/Discord/WhatsApp integration. Emerged as a Claude Code alternative after Anthropic paywalled third-party tool usage in April 2026.

Multi-harness control plane for Claude Code, Codex, Cursor, and OpenCode. Quota-aware rotation across multiple subscriptions, shared thread state, and local-first execution.

Mission Control for Claude Code. Native desktop app to browse, search, and drive Claude Code sessions with live status and diff review.

Terminal UI to manage AI coding-agent sessions (Claude Code, OpenCode, Codex, Grok, Gemini CLI) in tmux. Live status, group tree, quick prompts, diff review.