hopper

OPEN-SOURCE AI AGENT WORKSPACE

Every coding agent.
One place to build.

Run Codex, Claude Code, and Antigravity from one persistent workspace. Bring files and designs from ChatGPT, Claude, Gemini, and other web assistants directly into your coding workflow.

Download HopperView on GitHub
CODING AGENTS

Codex · Claude Code · Antigravity

WEB ASSISTANTS

ChatGPT · Claude · Gemini · Copilot · Mistral

hopper / local workspaceYOUR TOOLS. YOUR CONTEXT.
Real Hopper application showing local projects, persistent agent conversations, and provider controls
Hopper application screenshot from the public repository.

01 / THE WORKFLOW

From idea to
implementation.

Start with a conversation. Keep the files, context, and tools with you all the way to a commit.

  1. 01

    Explore

    Open ChatGPT, Claude, Gemini, Copilot, Mistral, or web search in Hopper’s assistant browser.

    Web assistants & search
  2. 02

    Import

    Bring generated documents, images, HTML, React code, ZIP files, and conversation bundles into Bridge.

    Preview before importing
  3. 03

    Build

    Attach imported files to your active chat. Continue with Codex, Claude Code, or Antigravity.

    Your selected coding thread
  4. 04

    Review and ship

    Inspect files, terminal output, Git changes, diffs, branches, issues, and pull requests in one workspace.

    From prompt to commit

02 / CODING AGENTS

Your agents work
better together.

Switch providers without switching projects. Persistent conversations and browser-style tabs keep your work ready to resume.

  • Codex, Claude Code, and Antigravity
  • Multiple threads with persistent workspace context
  • Automatic provider detection and guided installation
  • Sign in with your own provider account

ONE WORKSPACE / MULTIPLE ENGINES

CodexPlan · Build · Review
Claude CodeContinue the conversation
AntigravityBring your existing tools

Connect your providers. Keep your conversations.

03 / HOPPER BRIDGE

Turn web conversations
into real project files.

The design you explored in a web assistant becomes context for your coding agent. Review the files in Bridge, then import them into your active workspace and selected chat.

DocumentsHTML & codeImagesZIP filesConversations

Preview first. Import when ready. Files are never automatically executed.

SOURCE

Web assistant

Generated files & downloads

REVIEW

Hopper Bridge

Preview files before they enter your project

DESTINATION

Active coding thread

Your workspace, your selected chat

04 / ASSISTANT BROWSER

Research without
breaking your flow.

Open web assistants and general search in browser-style tabs. Keep multiple sessions alongside your coding workspace; assistant downloads appear in Bridge for review.

ChatGPT, Claude, Gemini, Microsoft Copilot, and Le Chat Mistral are web assistants. Codex, Claude Code, and Antigravity handle your coding-agent workflow.

EXPLORE WITH YOUR OWN ACCOUNTS

ChatGPTClaudeGeminiCopilotMistralWeb search

Research → Downloads → Bridge review

05 / LOCAL DEVELOPMENT

Everything from
prompt to commit.

Your everyday development tools, alongside your agent conversations.

FILES & CONTEXT

Bring the right files.

Navigate your project in the file explorer. Drag and drop files and images into chat attachments.

TERMINAL

Stay close to your code.

Run commands and inspect terminal output without leaving the workspace.

GIT & GITHUB

Review the change.

Inspect status and diffs, manage branches, and work with GitHub issues and pull requests using your local tooling.

ISOLATED WORK

Give tasks room.

Use Git worktrees for isolated agent tasks and keep parallel changes in separate working directories.

06 / EXTENSIONS

Bring your
own tools.

Connect MCP servers, discover reusable skills, and use the developer tools already on your machine. Work with cloud or local models through your configured providers.

Explore the project documentation

MCP servers

Connect tools and external context.

Skills marketplace

Reuse workflows across your agents.

Your provider accounts

Choose your models and subscriptions.

07 / LOCAL FIRST

Your workspace
stays yours.

Hopper operates against local workspaces. Connect your own provider accounts and decide how your tools access your project.

  • Review Bridge files before they are copied
  • No automatic execution of imported files
  • Provider subscriptions are not bundled
  • Git worktrees for isolated parallel tasks
  • Remote daemon mode is optional and explicit

Connected AI providers process requests under their own policies. Local workspaces do not mean that every provider request stays on your device.

08 / OPEN SOURCE

Built openly.
Made to be extended.

Read the code, report a bug, or contribute your next improvement. Hopper is available under the MIT license.

Built on CODEXmonitor by Thomas Ricouard (Dimillian). The upstream copyright and MIT license are preserved.

Browse the source GitHubSee releases DownloadsReport a bug IssuesContribute DocumentationRead the license MIT

09 / START BUILDING

Your next project.
Your own workspace.

Choose the build for your operating system and processor.

Release v1.0.1 · Checking for the latest release…

All releases and installation notes

Bring your own provider accounts. Hopper does not include subscriptions to AI services.

10 / GOOD TO KNOW

A little
more context.

What is Hopper?

Hopper is an open-source desktop workspace that brings coding agents, web assistants, files, terminals, and Git workflows together.

Which coding agents does Hopper support?

Codex, Claude Code, and Antigravity. Web assistants such as ChatGPT and Claude are available separately in the assistant browser.

Does Hopper include provider subscriptions?

No. Connect your own Codex, Claude Code, or Antigravity account and meet the provider’s requirements. Hopper does not bundle subscriptions.

Can Hopper install a missing provider?

Hopper detects missing providers and offers guided installation and sign-in. Requirements depend on your platform and chosen provider.

What is Hopper Bridge?

Bridge is the review and import step between web-assistant downloads and your local project. Preview files, then attach them to your active workspace and selected chat.

Can I bring ChatGPT or Claude-generated files into my project?

Yes. Bring generated documents, HTML, code, images, ZIP files, or conversation bundles into Bridge, review them, and import the files you want.

Does Hopper execute imported files automatically?

No. Importing files does not execute them. You decide what to do with them in your development workflow.

Does Hopper work locally?

Yes. Hopper works against local workspaces. AI providers may process requests remotely. An optional remote daemon mode lets you explicitly connect to another machine.

Which operating systems are supported?

The download section lists only builds present in the latest GitHub release, with the operating system, processor architecture, and file type. Check GitHub Releases for all versions.

Can I use Git worktrees?

Yes. Use worktrees to give agent tasks isolated working directories and keep parallel changes separate.

Does Hopper support MCP servers and skills?

Yes. Connect MCP servers and use the skills marketplace to extend your workflows with tools and reusable instructions.

Is Hopper open source?

Yes. The public repository is licensed under MIT, with upstream copyright retained.

Where can I report bugs?

Open an issue in the Hopper GitHub issue tracker. Include your platform, Hopper version, and steps to reproduce.