Proliferate

Open-source AI IDE for Claude Code, Codex, OpenCode, and more. The **harness** contribution is the workspace/session orchestration layer: run multiple coding agents in parallel, locally or in the cloud, with isolated workspaces, reusable workflows, and shared team context.

multi-agentsandboxidetypescript

Stars: 519
Adoption surface: complex
Autonomy: bounded
Recovery: resumable
License: ✅ open-source
Category: Coding agent products (IDEs, CLIs, full suites)

Repository ↗ Example: Product README ↗

Related in Coding agent products (IDEs, CLIs, full suites)

DeepSeek Harness
opencode
Codex
pi
Gemini CLI
OpenHands

Maintain Proliferate? Add the badge

Paste this into your README so readers can find the list and see how Proliferate compares:

[![Best of Agent Harnesses](https://img.shields.io/badge/%F0%9F%8F%86_Best_of-Agent_Harnesses-5ac4bf)](https://github.com/RyanAlberts/best-of-Agent-Harnesses)