01Project-aware sessions
Every session knows where it stands.
Chats are bound to a project directory. The agent reads, writes, and runs tools inside your codebase, and switching projects carries the context with you.
A desktop for the Pi coding agent
Your agent lives in the terminal. Give it a desk.
Replies stream silky-smooth, Markdown renders like typeset prose, and every Pi capability—projects, providers, extensions, skills—works first-class. The polished desktop your coding agent always deserved.
- Built for macOS
- Local by default
- Open source, MIT
The agent, in motion
See the work as it happens.
Replies stream as live Markdown, with tool calls summarized and expandable inline—so you follow the agent's thinking instead of scrolling a terminal buffer.
Built for daily work with agents
The power of the terminal, without the terminal.
02Streaming Markdown
Replies render as they arrive.
Assistant output flows through Streamdown—fenced code blocks, tables, and expandable tool-call summaries, rendered live so you can watch the agent think.
03Persistent by default
Everything is where you left it.
Sessions, sidebar layout, window position, theme, and typography return on relaunch. Search across history and jump straight to the matching message.
Why a desk
One task, one surface. No window choreography.
Ousia is built for people who work with an agent all day. Pi keeps its tools, providers, and skills; Ousia gives the conversation a place to live—interruption, compaction, branching, and all.
- 01AskOpen a session in any project
- 02WatchStream tools and edits inline
- 03SteerQueue a note or change course
Also in the box
The quiet parts, included.
- 01Extensions & skills
Discover, install, and update Pi packages from a curated catalog.
- 02Conversation search
Search across chat history and jump to the matching message.
- 03System prompts
Shape the agent's behavior in a dedicated Markdown editor.
- 04Git branches
Create and switch project branches without leaving the session.
- 05Attachments
Drag files and images into the composer for multimodal models.
- 06Any provider
Anthropic, OpenAI, Gemini, and other Pi-compatible providers.
- 07Shared Pi config
Reads ~/.pi/agent—setup done in the Pi CLI works here, and back.
- 08Local state
Desktop state and logs stay in app data and ~/.ousia.
Three small steps
From download to first session in a minute.
Ousia is pre-release software for Apple-silicon Macs and ships fast. Download the latest DMG, or clone the repository and run it from source with Node 24.
- 1
Download the DMG
Grab the newest release from GitHub—a plain disk image for Apple-silicon Macs, with no store and no installer wizard.
- 2
Drag to Applications
Open the image, drag Ousia in, and launch. On first run, pick a default workspace folder for your projects.
- 3
Point it at Pi
Providers and credentials come from ~/.pi/agent. Set them up once—in the Pi CLI or in Settings—and every session is ready.
Download for macOS
Version 0.3 · Pre-release · MIT licensed
Privacy is part of the product
Your sessions are not our business model.
Ousia keeps its state on your disk and leaves the source of truth with Pi: providers, credentials, models, and session history stay in ~/.pi/agent. Production builds send only privacy-sanitized diagnostics—prompts, responses, tool payloads, and credentials are excluded entirely.
