Show HN: Catenary – Claude Code, Codex and Antigravity Side by Side in One IDE

Category: devtools

Tags: ide, coding-agents, electron, multi-agent, developer-tools

Score: 6.8/10 (Innovation: 6, Technical: 8, Documentation: 7, Utility: 6)

Catenary is an IDE designed for coding agents, allowing users to run multiple agents like Claude Code, Codex, and Antigravity side by side in a unified interface with two views: TerminalMap and Canvas. It features agent-aware terminals, inter-agent communication, MCP server integration, and local-first operation. The project stands out by reimagining the IDE for multi-agent workflows, but it is closed-source (only releases) and currently niche.

Target audience: developers using AI coding assistants, AI engineers, and early adopters of agentic workflows

Repository: https://thecatenary.app · 5 stars

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