Proliferate: open-source, self-hostable IDE that runs coding agents in parallel

Proliferate is an open-source AI development environment that coordinates Claude, Codex, OpenCode, Cursor, and Grok working in parallel on one codebase. Each task gets its own isolated git worktree with a separate branch, terminal, conversation, and review state, and agents can delegate to child agents within a shared workspace. It supports MCPs, skills, custom tools, and automated workflows for recurring or event-driven runs. The repository shows 266 stars, 54 forks, and 2,904 commits, is AGPL-3.0 licensed, and ships deployment guides for Docker, AWS, GCP, and Azure.