amux vs Okena

amux is a terminal multiplexer for shared workflows in which people use keybindings and agents use CLI commands in the same panes. Users can create and arrange panes, manage windows, zoom panes, and broadcast keystrokes to multiple panes. Its CLI offers structured JSON session capture, blocking waits, and push-based events without requiring an SDK or language-specific library. Pane history stays on the server and can survive detach and reattach, server reload, and crash recovery; the default scrollback is 5,000 lines per pane. A built-in mailbox lets panes send, read, reply to, and acknowledge messages, with recipients checking an inbox instead of receiving automatic PTY input. An optional local MCP server over stdio exposes mailbox tools. Remote panes and windows can be mirrored over SSH, forwarding input and streaming remote PTY output. The repository documents Claude Code and Codex integrations, including mailbox-drain hook recipes. amux is MIT licensed and free, with installation through a shell script, Homebrew, or go install. The first server start installs a terminfo entry and requires ncurses tic. It runs on Linux and macOS, but does not implement every tmux feature, including session groups and advanced hooks.

Okena is a native terminal multiplexer for running multiple command-line agents and projects in one window. Workspaces can be arranged as side-by-side project columns, tabs, split panes, detachable terminal windows, or fullscreen. The terminal uses GPU-accelerated rendering and supports scrollback of up to 100,000 lines. Okena can save and restore workspace layouts and terminal sessions across restarts; persistence is local. Users can manage Git worktrees as projects and view branches and change statistics. Documented integrations include status or usage information for Claude Code and OpenAI Codex, Docker Compose project services, and opening files in editors. Remote control is documented through a local HTTP and WebSocket API, with a browser client and iOS and Android companion apps. Pairing uses HMAC-SHA256 token authentication and rate-limited pairing codes, and downloaded updates are SHA256 verified. Okena is free and open source under the MIT License, with a listed plan of free. Installation commands are provided for macOS, Linux, and Windows, alongside instructions for building from source.