Best open-source alternatives to Moshi

Happy is an open source harness for using multiple AI coding providers in one place. It is aimed at people who already subscribe to services like Claude, Codex, and Grok and want to manage those tools through a unified app rather than switching between separate products. The project includes a mobile app, web client, original CLI, relay server for encrypted sync, and a separate desktop app ecosystem. The README emphasizes local hardware execution, encrypted sessions across devices, and collaborative sessions where multiple people can watch and steer the same agent. It also notes that the CLI can be installed from npm and used directly in a terminal, while the broader experience spans desktop and mobile.

Cloud CLI (also called Claude Code UI) is a cross-device interface for working with agent-based coding tools such as Claude Code, Cursor CLI, and Codex. It is aimed at developers who want a browser-based dashboard for managing active projects, sessions, files, Git operations, chat, and browser-driven workflows from desktop or mobile devices. The project can be run locally through npm or in an experimental Docker sandbox, and it also offers a managed CloudCLI Cloud service. It includes a plugin system, session management, and a built-in terminal, while a desktop companion app provides tray/menu-bar access and links local or remote workspaces together. The README also highlights selective tool enabling for safer agent execution and runtime model/provider discovery through an API endpoint.

ColliePWA is a self-hosted mobile web app designed for developers who want to monitor and interact with terminal-based AI agents from a phone. It targets workflows around Herdr, with experimental support for tmux and zellij, and presents a phone-friendly interface for seeing which agent needs attention, sending input, and managing sessions without wrestling with terminal key chords on a touchscreen. The project emphasizes remote control over a private Tailscale tailnet and warns that it provides direct shell access to the host. It includes a dashboard, push notifications, a special-keys pad, quick replies, file browsing and diff viewing, device pairing, and multilingual UI support. Installation is offered via a download-and-run script, manual/source builds, and platform-specific setup documentation.

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.