MULTI-HARNESS · ACP-NATIVE

One workspace.Every agent.

Run Claude Code, Codex, DeepSeek Harness, and other ACP agents in one desktop. Bring multiple agents into the same conversation, use the built-in browser, and open MCP Apps or Codex plugins right beside the chat.

Download for macOS View on GitHub

Apple Silicon previewv0.0.7Open source

Pick a project, pick a harness, and start with the agent's real capabilities.

A shared desktop for the agents you already use

Claude Code
Codex CLI
DeepSeek Harness
Gemini CLI
OpenCode
Hermes
OpenClaw

THE PRODUCT

The conversation stays central. The tools stay close.

Backchat is a desktop client, not another agent dashboard. Multi-agent chats, files, terminals, the built-in browser, MCP Apps, and Codex plugins appear when the work needs them.

See the work, not a wall of logs.

Thinking and tool calls fold into a readable activity history. Follow the current action while it runs; open the details only when you need them.

Grouped tool activity
Streaming thoughts
Stable conversation timeline

Outputs have somewhere to live.

Keep project files, a terminal, and the built-in browser beside the conversation. Add multiple agents to one chat, or open native MCP Apps and Codex plugins without leaving the task.

Multi-agent chatBuilt-in browserProject filesTerminalNative MCP AppsCodex plugins

Interactive output shown beside a Backchat conversation

LIVE TRUTH

Agent-aware, not vendor-shaped.

Models, commands, modes, permissions, and session controls come from the selected harness. Backchat does not invent a generic capability layer and pretend every agent works the same way.

session / capabilitieslive

agent: codex-acp
mode: auto
model: gpt-5.6
tools: reported by harness
storage: local

YOUR HARNESS, YOUR CHOICE

Bring the agent. Keep its strengths.

Backchat discovers or installs ACP-compatible harnesses from Settings, then keeps their setup separate from the conversation itself.

AgentACP entryConnection

Claude Codeclaude-acpOfficial ACP adapter

Codex CLIcodex-acpNative Codex workflow

DeepSeek Harnessdsh-acpStandalone or dsh profile

Gemini CLIgeminiGemini ACP mode

OpenCodeopencodeOpenCode ACP mode

HermeshermesHermes ACP entry

OpenClawopenclawOpenClaw ACP entry

NATIVE SUPPORT

Native support for MCP Apps and Codex plugins.

Interactive apps and plugin output open inside the task, alongside the conversation, files, browser, and terminal—not in a detached dashboard.

Interactive MCP AppsCodex plugins

DESKTOP PREVIEW

Bring your agents into one quiet room.

Backchat is pre-release and under active development. Download the current macOS build, or package a native Windows or Linux build on your own machine.

Download latest build Build from source

macOS · Apple Silicon · v0.0.7

WINDOWS + LINUX

Package Backchat where you will run it.

Choose the recipe for your operating system. Each one builds Backchat from source and creates a native, unsigned installer on that machine.

Windows

NSIS installer

PowerShell

01
Prepare
Windows 10/11 · Git · Node.js 20+
02
Build
Run the complete command block below.
03
Collect
release/<version>/*.exe

PowerShell

git clone https://github.com/openma-ai/backchat.git
cd backchat
corepack enable
corepack prepare pnpm@10.34.5 --activate
pnpm install --frozen-lockfile
pnpm exec electron-vite build
pnpm exec electron-builder --win nsis --publish never

Linux

AppImage

Shell

01
Prepare
64-bit Linux · Git · Node.js 20+
02
Build
Run the complete command block below.
03
Collect
release/<version>/*.AppImage

Shell

git clone https://github.com/openma-ai/backchat.git
cd backchat
corepack enable
corepack prepare pnpm@10.34.5 --activate
pnpm install --frozen-lockfile
pnpm exec electron-vite build
pnpm exec electron-builder --linux AppImage --publish never

Package on the target operating system. If a native dependency falls back to compilation, install that platform's standard C/C++ build tools and retry.