Casual Desktop Free and Open Source Desktop App CookApps CookApps Marketplace

Overview

Casual Desktop is a private, local-only native desktop office suite engineered for everyday documents. Wrapping the battle-tested Casual Docs (.docx) and Casual Sheets (.xlsx) editors inside a lightweight Tauri 2 (Rust) shell, it provides a unified, distraction-free environment.

Files live strictly on your local disk — the shell reads and writes them through native OS file dialogs and saves back in place. There is no account sign-in, no telemetry daemon, and nothing leaves your workstation. It also embeds an on-device local AI assistant for grammar assistance and spreadsheet formulas.

Key Technical Features & Capabilities

100% Offline & Private: Zero cloud dependency, zero external API pings, and absolute data sovereignty.

Dual Native Core: Seamlessly switches between Word (.docx, .txt, .md) and Excel (.xlsx, .xlsm, .csv) in one window.

Ultra-Lightweight Footprint: Small ~15MB binary size using system WebKit/WebView2 instead of heavy 200MB+ Electron runtimes.

Native OS Dialogs: Integrates directly with macOS Finder and Windows File Explorer for file operations.

Local Agentic AI Assistant: On-device natural language query assistance for document summarization and formula generation.

Architecture & Technology Stack

Desktop Shell: Tauri 2, Rust core, Vanilla TypeScript launcher

Document Editors: React, ProseMirror, Univer OSS

Supported Formats: .docx, .xlsx, .xlsm, .ods, .csv, .tsv, .txt, .md

Supported Operating Systems: macOS, Windows, Linux

System Requirements

Component	Minimum Requirement	Recommended Specification
Operating System	macOS 11.0+ / Windows 10 x64 / Linux x64	macOS 14.0+ / Windows 11
RAM	512 MB RAM	2 GB RAM
Disk Storage	30 MB free space	100 MB free space

Installation & Setup Guide

3 Redit

macOS (.dmg)

Download Casual-Office_aarch64.dmg or x64.dmg.

Drag Casual Office.app into your Applications folder.

Launch via Spotlight (Cmd+Space).

Windows (.msi)

Download Casual-Office_x64_en-US.msi.

Run installer and launch from Start Menu.

From Source

bash

git clone https://github.com/CasualOffice/desktop.git
cd desktop
pnpm install
pnpm tauri dev

Installation & Setup Guide

Mở khóa ứng dụng để xem chi tiết hướng dẫn cài đặt, cấu hình môi trường và vận hành.

How to Use & Workflow

3 Redit

Launch Casual Office.

Choose "Open Document" or drag a .docx/.xlsx file onto the launcher.

Work seamlessly with keyboard shortcuts.

Save directly with Cmd+S (Ctrl+S).

How to Use & Workflow

Mở khóa ứng dụng để xem chi tiết hướng dẫn cài đặt, cấu hình môi trường và vận hành.

Troubleshooting & Common Issues

Problem: Windows Defender SmartScreen warning on first launch.

Cause: Newly signed open-source certificate building reputation.

Solution: Click "More info" -> "Run anyway".

📌 Nguồn & Bản quyền tác giả:

Dự án được xây dựng và phát triển mã nguồn mở bởi tác giả CasualOffice (@CasualOffice).

Mã nguồn chính thức: https://github.com/CasualOffice/desktop

Trang chủ: https://casualoffice.org

Casual Desktop

Overview

Key Technical Features & Capabilities

Architecture & Technology Stack

System Requirements

Installation & Setup Guide

macOS (.dmg)

Windows (.msi)

From Source

Installation & Setup Guide

How to Use & Workflow

How to Use & Workflow

Troubleshooting & Common Issues

How to Use & Getting Started

How to Use & Getting Started

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