If you are looking for a tmux alternative, the honest starting point is that tmux does its job well: it lets you detach a terminal and reattach later with tmux attach, and the programs inside keep running.1 What pushes people toward alternatives is everything around tmux — reaching the machine from a phone, keeping a connection alive through mobile networks, moving files, and configuring SSH plus port forwarding to make the host reachable in the first place. This page compares tmux with CLIAnywhere across those layers, sourced from tmux's own documentation, and includes the cases where tmux is simply the better choice.
What tmux Does — and Does Well
tmux is a terminal multiplexer: it runs a server process that hosts your sessions over a local Unix socket, so detaching the terminal — or losing the connection entirely — does not kill what is running inside.2 The tmux project lists exactly the two remote-workflow uses this page is about: protecting running programs on a remote server from connection drops, and accessing them from multiple different local computers.1 It is mature, ISC-licensed open source, packaged in every major BSD/Linux distribution and macOS, deeply scriptable, and it is the standard answer across the ecosystem — even Termius's docs recommend it for mobile session persistence.5
The boundary is that tmux covers only the persistence layer. It has no networking of its own — it attaches via a local socket — so remote access requires you to assemble SSH (with its reachability requirements: public IP, port forwarding, a tunnel or a VPN), plus a terminal client on whatever device you connect from.2 And it does not survive a reboot of the host, since the server is a userspace process; reboot survival needs extra tooling such as systemd services or third-party plugins.2
If You Are Comfortable with tmux and SSH
If you are comfortable with tmux and SSH, tmux may be the better choice. It is mature and stable, it is installed or one package away on essentially every Unix-like machine you will ever administer, and its scripting — keybindings, config file, copy mode, panes and windows, driven interactively or from scripts — is far deeper than anything a GUI app offers.1 It works with any SSH client on any device, because from the client's point of view it is just a terminal. CLIAnywhere does not replace that: it is not a multiplexer, it does not manage panes, and it is not present on the servers you administer. If your machines are Unix hosts you already reach over SSH, adding tmux there is the complete and correct answer.
tmux vs CLIAnywhere
Every tmux cell is sourced from tmux's README, wiki and manual page (retrieved 2026-08-28) — see the Sources list below. CLIAnywhere cells state verified product capabilities.
| Dimension | tmux | CLIAnywhere |
|---|---|---|
| Persistent sessions | Yes — server survives detach; reattach with tmux attach1 |
Yes — sessions keep running on the PC; clients reattach |
| Layer it works at | Multiplexer inside one machine's terminal2 | Whole chain: host sessions + clients + connectivity |
| Setup for remote access | Install tmux on the host, enable an SSH server, make the host reachable (port forwarding, tunnel or VPN)2 | Install the daemon on the PC and link the app — no SSH server, no port forwarding |
| Host platforms | OpenBSD, FreeBSD, NetBSD, Linux, macOS, Solaris; no native Windows — WSL only3 | Windows, macOS and Linux hosts, including cmd, pwsh and powershell on Windows |
| Mobile access | No first-party client — a third-party SSH app connects and attaches1 | Native iOS, Android and Web clients |
| Networking | None of its own — attaches via a local Unix socket; remote use rides on SSH2 | P2P (DTLS) with encrypted relay (WSS) fallback, connecting outbound |
| File transfer | None built in — use scp/SFTP separately2 | File browser with download, built in |
| Encryption | None of its own — whatever the SSH channel provides2 | SPAKE2 key exchange + AES-256-GCM end-to-end; relay sees only ciphertext |
| Scriptability | Deeply scriptable and customizable — panes, windows, copy mode, config file1 | A terminal app, not a multiplexer — no pane/window scripting |
| Survives host reboot | No — the server is a userspace process2 | No — sessions live on the PC while it runs |
When CLIAnywhere Is the Better Fit
CLIAnywhere fits when the machine is your own Windows, macOS or Linux PC and you want the whole chain in one product instead of assembling it. Its daemon keeps terminal sessions alive on the PC, and its iOS, Android and web clients attach to them — so a dropped phone connection does not kill your work, and you can switch from the desktop terminal to your phone and back within the same session. Because the daemon connects outbound over P2P (DTLS) with an encrypted relay (WSS) fallback, there is no SSH server to enable and no port forwarding or public IP. A file browser with download and access to localhost and LAN web apps are included, and traffic is end-to-end encrypted with SPAKE2 key agreement and AES-256-GCM.
In short: tmux gives you the persistence layer and assumes you bring the transport, the reachability and the client. CLIAnywhere bundles all of it, at the cost of being a product you install rather than a tool already on every server.
| Windows / macOS / Linux host | Yes |
|---|---|
| iOS / Android / Web client | Yes — see the download page |
| Shells (host side) | bash, zsh, fish, sh, cmd, pwsh, powershell |
| Persistent sessions | Yes |
| Desktop ↔ mobile session switching | Yes |
| File browser + download | Yes |
| Localhost / LAN web access | Yes |
| Port forwarding / public IP required | No |
| Encryption | SPAKE2 key exchange + AES-256-GCM, P2P (DTLS) with encrypted relay (WSS) fallback |
| Open-source daemon | Yes — github.com/CLIAnywhere/clianywhere_daemon |
How They Combine
CLIAnywhere and tmux are not mutually exclusive, and the combination is a practical stack. Run tmux on a server you administer; open a CLIAnywhere session on your PC; SSH from that session to the server and attach to tmux there. Your server-side work now survives drops at both layers — the CLIAnywhere session on your PC keeps the SSH client alive through phone disconnects and device switches, and tmux on the server keeps the remote programs alive even if the SSH connection to the server itself is interrupted.1
The reverse also holds: everything tmux does best — panes, windows, scripted layouts, copy mode — is still available to you inside a CLIAnywhere terminal on a Linux or macOS host. CLIAnywhere replaces the transport and the mobile client, not the multiplexer.
Sources
All tmux facts above were retrieved from the tmux project's own documentation on 2026-08-28.
- tmux README and wiki (what tmux is; protecting remote programs from connection drops; access from multiple computers; supported platforms; scriptability): github.com/tmux/tmux, tmux wiki — Getting Started
- tmux(1) manual page (client/server model over a Unix socket; no file transfer or encryption features of its own; userspace server): man.openbsd.org/tmux
- Windows support absence and WSL: tmux README platform list (github.com/tmux/tmux); Microsoft WSL documentation: learn.microsoft.com — About WSL
- Reboot survival limits and third-party plugins: github.com/tmux-plugins/tmux-resurrect
- Termius docs recommending tmux/screen for mobile session persistence: docs.termius.com — keeping sessions alive in the background on iOS/iPadOS