Best open-source alternatives to Moshi

Happy is a client and control layer for Claude Code and Codex that lets users monitor and manage AI coding sessions from mobile, web, and desktop surfaces. It is aimed at developers who want to stay connected to their coding agents while away from their primary machine, especially when permissions are needed or errors occur. The project combines several components: a CLI wrapper that replaces direct use of `claude` or `codex`, a web and mobile app, a native macOS desktop app, a remote agent CLI, and an encrypted backend server for syncing sessions. The README emphasizes end-to-end encryption, push notifications, and quick switching between devices, and it provides links to the app downloads, documentation, and related project repositories.

CloudCLI is an open source user interface for AI coding agents such as Claude Code, Cursor CLI, and Codex. It is aimed at developers who want a browser-based way to work with agent sessions, files, Git, and terminal access from desktop or mobile devices. The project can be run locally through npm or in an experimental Docker sandbox, and it also has a managed cloud offering. Its UI focuses on session management, interactive chat, file and Git exploration, browser-based workflows, and extensibility through plugins. The README also describes a companion desktop app that connects to local or remote CloudCLI environments.

VibeTunnel is a terminal-access tool aimed at people who want to observe and interact with shell sessions from a browser, especially while away from their computer. The README positions it as useful for monitoring long-running builds, checking on AI coding agents, and sharing a terminal session without relying on traditional SSH workflows. It is built around a macOS menu bar app, a Node.js server, and a web frontend. Users can install it either as a native Mac app or as a global npm package for Linux and headless systems, then use the `vt` command to forward terminal sessions into the browser. The project also highlights session recording, Git-follow behavior, keyboard shortcut handling, and remote access via secure networking options such as Tailscale or ngrok.

Collie is a web-based control surface for Herdr agent herds, designed for use on a phone while connected through Tailscale. It presents a dashboard that highlights whichever agent needs attention, lets the operator reply through a normal text field, and provides mobile-friendly controls for terminal interaction, quick commands, and session switching. The project is aimed at a single operator managing a personal tailnet-hosted herd rather than shared or public access. The README emphasizes that it acts with the user’s full shell privileges and should be treated like remote shell access to the machine. It runs locally on the host, exposes itself through Tailscale or a compatible front door, and includes features such as push notifications, image uploads, search within output, and a PWA-style home screen install.