Catenary

Catenary is an IDE for coding agents that combines a code editor, split terminals, and a spatial canvas.

Catenary is an IDE built specifically for coding agents, featuring a code editor with a local language server, split terminals, and a spatial canvas. It supports TypeScript, JavaScript, and Python language servers, alongside native tools for Claude Code, Codex, Antigravity, Cursor, and OpenCode. The editor protects your edits with conflict resolution buffers and provides built-in browser panels, rich markdown previews, and a git diff review system. Designed to run locally without sending your code or telemetry to remote servers, it brings your preferences from VS Code, Cursor, or Ghostty. It suits developers who want to manage autonomous coding agents across multiple parallel tasks and isolated worktrees.

Catenary at a glance

Best for: Software engineer
Runs on: macOS, Windows, Linux
Pricing: Free plan; Pro $19
Released: September 2026
Category: AI coding tool
Website: thecatenary.app

Key features

Spatial canvas for agents
Code editor with local LSP
Split terminals
Built-in browser panel
Protected edit buffers
Markdown and Jupyter previews
Worktree branch launcher
Maestro agent orchestration

Use it for

Managing multiple autonomous coding agents in parallel
Reviewing code diffs and opening pull requests
Editing code with local language server support
Testing web applications in a built-in browser

Alternatives to Catenary

CodeGraph — It eliminates file crawling, reducing AI agent tool calls by 88% and cutting costs.
LangChain — Compose exactly the agent your use case needs from model, tools, prompt, and middleware.
Hermes IDE — Run different coding agents side by side in one interface with centralized reviews.
Strands Agents — Provides fully assembled agent defaults and complete control over the execution loop.
NodeTerm — It keeps terminal processes and agent sessions alive across machine reboots.
Qoder — It features deep codebase awareness, autonomous coding agents, and cross-platform support.
OpenCode — Works with 75+ model providers, local models, and existing subscriptions
Neptune — It combines a fast native terminal engine with built-in management for AI coding agents.
jevgrep — Reduces coding agent costs by providing targeted, relevant repository context.
Graphicle — Maps your repository into a code graph and remembers project docs locally.
Flow — Visualises coding agent activity in real time with dynamic terminal scenes.
Agent Relay — It carries turns between different AI agents and stops for human decisions.

All Catenary alternatives