KilnAgents, side by side
Each agent works in its own terminal. The sidebar shows which one needs you.
Learn more →
The AI agent IDE, built around your terminal
Claude Code, Codex and Antigravity in one workspace. Close the window; your sessions keep running.
Free · Open source · macOS & Windows
Works with Claude Code Codex Antigravity
Review in the same window
Browse history, squash commits and check diffs next to the work.
Learn more →
Firing notesRequirements
- macOS
- macOS 11+ on Apple Silicon
- Windows
- Windows 11 (x64, ARM64) · not code-signed yet
- Agents
- Bring your own Claude Code, Codex or Antigravity account
- Languages
- English · 한국어 · 日本語 · 简体中文
- License
- MIT
Open a folder. Get to work.
Free on macOS and Windows.
An AI terminal with room for the whole task
Kiln is a terminal-first AI IDE for developers who work with coding agents. Run your existing agent CLIs beside shells and development servers, then inspect files, Git changes and databases in the same native app.
Run agents in parallel
Give Claude Code, Codex or Antigravity a task in its own terminal panel. Follow running and waiting states, then jump to the session that needs a decision.
Read the setup guide →Keep terminal work running
A local daemon owns your sessions. Closing the GUI leaves those processes running; reopening Kiln restores your workspace. A reboot or an exited process still ends that running process.
Read the setup guide →Review across repositories
Open a parent folder for frontend and backend repositories. Keep the shared task context while selecting the repository for each Git operation.
Read the setup guide →Before you choose an AI IDE
Is Kiln an AI model or an AI agent terminal?
Kiln is an AI agent terminal and development workspace. Claude Code, Codex and Antigravity are separate CLI tools that you install and authenticate. Kiln does not include a model subscription.
How is Kiln different from a plain terminal?
It combines persistent terminal sessions, agent task states, a file editor, Git review and SQL tools in one workspace. You can still use your normal shell commands and existing agent accounts.
Can I use Claude Code and Codex side by side?
Yes. Run them in separate panels, track which task needs input and review their changes. Opt-in conversation linking also makes supported completed conversations available in the other CLI.
Is Kiln free, and which operating systems does it support?
Kiln is free and open source under the MIT license. Downloads are available for Apple Silicon Macs and Windows x64 or ARM64. Check the installation guide for current requirements.