Tiller 0.2.0 (Windows, pre-release)

Second pre-release of Tiller, Windows x64 only.

Install

Download Tiller-Setup-0.2.0-x64.exe and run it. It installs for the current user, no administrator rights needed.

The installer is not code-signed yet, so Windows SmartScreen will warn that it is from an unknown publisher. Choose More info → Run anyway if you trust this download. To check it first, compare its hash with SHA256SUMS.txt:

Get-FileHash .\Tiller-Setup-0.2.0-x64.exe -Algorithm SHA256

New in 0.2.0

• Orchestration. A conversation can hand work to other conversations — a fresh one, a copy of itself or an existing thread — as many at once as the machine has room for. Tasks wait while the machine is busy, and each result comes back into the orchestrating conversation. Orchestrating threads have their own sidebar section, with their work listed under them.
• Send in parallel. Send a message while a turn is running, or from its row in the queue: a copy of the conversation works on it and reports back.
• Built-in browser. Claude and Codex browse in tabs beside the conversation through Tiller's own tools, upload files and answer a page's dialogs. Sites that refuse it, such as Google sign-in, open in a Chrome of Tiller's own.
• Tabs and panes. Open conversations side by side, in several panes at once, or pop them out into windows. Ctrl+W closes a tab, Ctrl+PageUp/PageDown move through tabs, and every shortcut is listed in App settings.
• Composer. PageUp/PageDown page through the conversation and Home/End go to its top and end. Pick the model and reasoning effort of a new thread before its first message.
• Japanese UI (日本語), beside English and Korean. Tiller picks it when the system language is Japanese, or choose it in App settings › Language.
• Accounts. When an account reaches its usage limit, work carries on with another signed-in account, or with the other engine. Accounts can be logged out of and deleted from the accounts menu.
• Side chat beside a thread, never saved.
• Vaults. Every vault opens in a window of its own; new vaults go under Tiller Vaults in the home folder and can be moved. Claude and Codex share Tiller's memory and use only the vault's instructions; global instructions from the terminal can be imported into them.
• Answers. Excel workbooks show as read-only tables, tables copy as Markdown, and pictures copy from their right-click menu.
• The system stays awake while background work runs.
• Tiller no longer reads conversations from the terminal or the Claude desktop app; engines run on Tiller's own accounts and folders.

What is inside

Both engines ship with the app, so nothing else has to be installed:

Engine	Version	Notes
Claude Code	2.1.287 (Agent SDK 0.3.287)	Anthropic's binary exactly as published: not modified, not re-signed, no sign-in method removed
Codex	0.154.0-alpha.6.2	Tiller's build of the public fork miroqaan/codex-iocp (Apache-2.0, modified; see IOCP-PATCH.md next to it), with OpenAI's published helper executables

Sign in with your own Claude or ChatGPT account, or an API key, from Accounts in the sidebar.

See the README for what the app does. macOS and Linux builds are not available yet.

Known limits

• Sync and Tiller sign-in are not in this build; they show as coming soon. The phone app needs them, so it cannot connect yet.
• Unsigned installer (SmartScreen warning, see above).
• No automatic updates yet; new versions appear on this page.

Found a problem? Open an issue.