Open-Source Agentic AI (github.com)

Open-Agent.io is an open-source, self-hostable “agentic AI” platform announced as an alternative to closed toolkits like Claude Agent SDK, ChatGPT Agents, and Manus. It runs a multi-agent framework that can operate computers, browsers and phones to complete real-world tasks, orchestrating frontier models (OpenAI, Claude, Gemini) alongside open-source models. The project emphasizes a decision-making layer — using spec and context engineering to plan, score options, and surface choices so humans stay in control rather than endlessly prompt-chasing. Technically, Open-Agent is plug-and-play for developers: clone the repo, copy the provided .docker config and docker-compose files, add your API keys to config.json, and launch with docker compose up -d. It supports multi-model collaboration, model orchestration across APIs, and development hygiene (pre-commit checks) out of the box. Licensed under Apache 2.0 and inviting contributions with minimal bureaucracy, it lowers the barrier to build, inspect, and customize production-grade agents — enabling research on multi-agent coordination, privacy/self-hosting, extensibility for vertical agents, and commercial derivatives without vendor lock-in.