Multica

Overview

Multica is a native desktop client designed to make coding agent capabilities accessible to all knowledge workers through a visual interface. The project’s name is inspired by Multics (Multiplexed Information and Computing Service), the pioneering operating system created in 1964. Just as Multics solved multi-user time-sharing on computing resources, Multica is designed to solve multi-model and multi-agent collaboration for knowledge workers. Currently, 95% of knowledge workers are locked out of powerful coding agents like Claude Code, Codex CLI, and OpenCode due to CLI complexity, local environment setup barriers, and privacy concerns. Multica bridges this gap with a visual, native desktop interface.

Key Features

• Native macOS application with a clean, intuitive interface designed for non-technical users.
• Support for multiple AI agents through the Agent Client Protocol (ACP), including Claude Code, OpenCode, and Codex CLI.
• Local-first architecture ensuring data never leaves the user’s machine, protecting sensitive business information.
• Built-in session management with history tracking and resume capabilities.
• Comprehensive CLI tool for power users and developers to test and debug agent interactions.

Use Cases

• Non-technical knowledge workers who need AI assistance for data analysis, report generation, and task automation.
• Enterprise environments with strict data privacy requirements that cannot upload sensitive information to third-party cloud services.
• Scenarios requiring switching between and collaborating with multiple AI agents to maximize productivity.
• Developers who want a visual interface to quickly test and validate coding agent capabilities.

Technical Highlights

• Built with Electron, featuring a React renderer and Node.js main process architecture for cross-platform desktop experience.
• Agent communication via the ACP SDK, supporting stdio protocol and subprocess management.
• Self-managed session layer with client-side storage of raw session data for fast loading and recovery.
• Open-sourced under the Apache-2.0 license, supporting builds for macOS, Windows, and Linux.