# An opcode (Claudia) alternative with Codex and Gemini CLI opcode calls itself [a GUI app and toolkit for Claude Code](https://github.com/winfunc/opcode): a desktop app for Claude Code's projects and sessions, custom agents, usage and MCP servers, called Claudia until it [took the name opcode](https://github.com/winfunc/opcode/commit/6b63e50da02d5ea88781441ee019a132b0df5ec9) in August 2025. Moontors is an agentic development environment (ADE), a Claude Code GUI that runs Codex and Gemini CLI too, side by side, on macOS, Windows and Linux. ## At a glance | | opcode | Moontors | | --------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------- | | Agents | [Claude Code](https://github.com/winfunc/opcode) | Claude Code, Codex and Gemini CLI | | Platforms | [Builds for macOS and Linux](https://github.com/winfunc/opcode/releases/tag/v0.2.0); Windows [built from its source](https://github.com/winfunc/opcode#-build-from-source) | macOS 13+, Windows 10+ (x64), Linux (x86-64); an app for Android and iPhone, on [Google Play](https://play.google.com/store/apps/details?id=com.moontors.mobile) and [the App Store](https://apps.apple.com/app/id6824488067); the Windows and Linux builds aren't signed yet, and Windows asks before the first open; on Windows 11, Smart App Control, when it's on, blocks unsigned apps, Moontors among them; early preview (0.x) ([Known limits](/docs/known-limits/)) | | Needs | [Claude Code, installed](https://github.com/winfunc/opcode#-installation) | Each agent's own sign-in; no Moontors account needed ([Signing in](/docs/sign-in/)) | | Licence | [AGPL-3.0, open source](https://github.com/winfunc/opcode/blob/main/LICENSE) | Free, closed source | | Data | [No data collected or tracked, and all of it kept on your machine](https://github.com/winfunc/opcode#-security) | No Moontors account needed, and no Moontors server can read your sessions. Moontors itself sends no telemetry; each agent's own usage data follows that agent's settings | ## What each has that the other doesn't opcode: - open source, under the [AGPL-3.0 licence](https://github.com/winfunc/opcode/blob/main/LICENSE); - [custom agents](https://github.com/winfunc/opcode#-cc-agents), each with its own system prompt and its own file and network permissions, run in the background; - a [usage dashboard](https://github.com/winfunc/opcode#-usage-analytics-dashboard) of Claude Code's cost and tokens by model, project and day, with charts and an export; - [checkpoints](https://github.com/winfunc/opcode#-timeline--checkpoints) on a branching timeline, each restored with one click, with the diff between any two; - a [scan for every CLAUDE.md in your projects](https://github.com/winfunc/opcode#-claudemd-management), each opened in its editor with a live preview; - [MCP servers](https://github.com/winfunc/opcode#-mcp-server-management) added and tested from its window, or imported from Claude Desktop. Moontors: - Codex and Gemini CLI beside Claude Code; - a release for Windows, as for macOS and Linux, where opcode's [latest release](https://github.com/winfunc/opcode/releases/tag/v0.2.0) has none; - a git worktree for a session, made, used and cleaned up for you, when you want one ([Worktrees](/docs/worktrees/)); - an app for Android and iPhone, on [Google Play](https://play.google.com/store/apps/details?id=com.moontors.mobile) and [the App Store](https://apps.apple.com/app/id6824488067), that follows and answers your computer's own sessions over a link encrypted end to end, which no Moontors server can read. ## Where opcode (Claudia) is the better fit - You want an open-source app. - You use Claude Code alone, and want agents of your own, each with its own prompt and permissions. - You want charts of what Claude Code costs you, by model, project and day. - You want every CLAUDE.md across your projects found for you, and MCP servers added from the app. ## Questions ### Is opcode the same as Claudia? Yes. Claudia [took the name opcode](https://github.com/winfunc/opcode/commit/6b63e50da02d5ea88781441ee019a132b0df5ec9) in August 2025, and its repository is now [winfunc/opcode](https://github.com/winfunc/opcode) on GitHub, where its old addresses lead. ### When did opcode last release? On August 31, 2025, with [version 0.2.0](https://github.com/winfunc/opcode/releases/tag/v0.2.0), for macOS and Linux. Its [last change to the code](https://github.com/winfunc/opcode/commits/main) was made on October 13, 2025, and since then only its README has changed, on September 18, 2026. Moontors' versions are listed with their notes in [Release notes](/docs/releases/). ### Does opcode run Codex or Gemini CLI? No. opcode is [built for Claude Code](https://github.com/winfunc/opcode), which it needs installed. Moontors runs Claude Code, Codex and Gemini CLI side by side, each signed in with its own account. ### Does opcode run on Windows? Only built from its source. opcode's [latest release](https://github.com/winfunc/opcode/releases/tag/v0.2.0) has builds for macOS and Linux, and its [README](https://github.com/winfunc/opcode#-build-from-source) shows how to build it for Windows 10 or 11 yourself. Moontors has a release for Windows, as for macOS and Linux. ### Is Moontors open source? No. Moontors is free, but closed source. opcode is open source, under the [AGPL-3.0 licence](https://github.com/winfunc/opcode/blob/main/LICENSE). ## Related - [What is an agentic development environment (ADE)?](/docs/what-is-an-ade/) - [How to run several Claude Code sessions in parallel](/docs/how-to/run-claude-code-sessions-in-parallel/) - [How to use Claude Code, Codex and Gemini CLI together](/docs/how-to/claude-code-codex-and-gemini-cli-together/)