The Open‑Source AI Desktop App with 28K Stars That Unifies Claude Code, Codex, and 20+ Tools

Problem addressed

Command‑line AI tools such as Claude Code, Codex, and Gemini CLI each require a separate terminal, are often platform‑specific, and do not integrate file‑editing or task execution with the chat interface. AionUi consolidates these capabilities into a single desktop application.

What is AionUi

AionUi (officially called Cowork App) is a free, open‑source AI collaboration desktop application. It can read and write local files, perform web searches, generate images and documents, and expose every action for user confirmation or cancellation. The app runs on macOS, Windows, and Linux, stores all data locally in SQLite, and does not depend on any single large‑model provider.

Key capabilities compared with ordinary AI chat clients

Local file operations : built‑in agents can directly read/write files.

Multi‑step automation : supports multi‑step tasks with optional manual approval.

Multiple AI tools : integrates 20+ tools (Claude Code, Codex, Gemini CLI, Qwen Code, GitHub Copilot, etc.) in a unified workspace.

Cron scheduling : enables automated tasks on a schedule.

Remote access : WebUI plus integration with Telegram, Feishu, DingTalk, WeChat.

Pricing : completely open‑source and free; only API usage of the selected AI platform may incur costs.

Plug‑and‑play, no CLI pre‑install

The application ships with a complete AI Agent engine. After downloading and installing, entering an API key (or logging in with Google for Gemini) immediately enables:

Read/write local files

Web search

Image generation

Extension via MCP tools

AionUi also includes 21 ready‑made assistants for tasks such as PPT creation, Word document drafting, Excel data analysis, folder organization, and workflow execution.

PPT assistant generates editable .pptx files with Morph animation transitions.

Unified multi‑agent interface

Installed CLI tools are automatically detected and connected through the Agent Client Protocol (ACP), eliminating the need to open separate windows. Supported agents (partial list) include:

Built‑in agents (zero‑configuration)

Claude Code

Codex

Qwen Code

Gemini CLI

Cursor Agent

OpenClaw

Hermes Agent

GitHub Copilot

…and more

Features include switching agents in a single window, parallel sessions that do not interfere, shared MCP configuration, a YOLO/auto mode to reduce repetitive approvals, and a Team Mode where a leader agent distributes tasks to multiple teammate agents for complex projects.

Assistants that turn a sentence into a concrete document

PPT assistant : generates editable .pptx files with Morph transitions.

Word assistant : writes papers, contracts, and formal documents.

Excel assistant : creates tables, charts, and performs data analysis.

Cowork assistant : organizes folders, batch processes files, and runs workflows.

Assistants are customizable; skills are divided into built‑in, custom, and extensions and can be toggled on or off during a conversation.

Remote access and scheduled tasks

Enabling WebUI allows connection from a phone, tablet, or another computer. Integration with Telegram, Feishu, DingTalk, and WeChat makes the AI assistant available within everyday communication tools.

Scheduled tasks are defined in natural language with a Cron expression or fixed interval, enabling 24/7 automation such as daily news briefs, weekly summaries, or periodic backup organization.

Data storage and security

All conversations, configurations, and task records are stored by default in a local SQLite database on the user's computer; no data is uploaded to project servers. The software itself is free and open‑source, with costs limited to API usage of the selected AI platform.

Quick start

Download the installer for your operating system from https://github.com/iOfficeAI/AionUi/releases.

Install, launch, and enter an API key or log in with Google.

Select a built‑in assistant or start a conversation to try it out.

(Optional) If Claude Code, Codex, etc., are already installed, enable Multi‑Agent Mode in settings for automatic detection.

Open‑source repository

https://github.com/iOfficeAI/AionUi