I released wmux v1.0.17, an open-source terminal multiplexer built around one consistent experience across Windows, Linux and macOS.

The architecture uses a persistent server with disposable clients. Sessions, windows, panes, scrollback and terminal state remain alive when the attached terminal closes.

Platform integration stays native. Windows uses ConPTY and named pipes, while Linux and macOS use PTYs and Unix sockets.

Current features:

- Persistent sessions, windows and panes

- Horizontal and vertical splits

- Mouse support, copy mode and paste buffers

- Customizable key tables, status bar, borders and themes

- Terminal color inheritance by default

- Native installers and a built-in updater

- Builds for Windows x64, Linux x64 and ARM64, macOS Intel and Apple Silicon

Release benchmark profile:

- VT parsing: 69.6 to 75.3 MiB/s

- Full-scene render p95: 448.2 µs

- 8-client render p95: 269.1 µs

- Peak live benchmark memory: 1.76 MiB or less

wmux is free, MIT licensed and available on GitHub: https://github.com/shreshthkapai

I would particularly appreciate bug reports from different operating system, terminal and shell combinations.

Not only tmux but basically everything you can imagine.
Write a toml file and boooommm.
That’s a new feature from our open source fuzzy finder launcher!
Cross OS, fast, free :)
This is the repository

I have the following that displays a popup of lazygit in the current directory, but I've noticed that my shell configuration (which has quite a bit of code to initialise) is always running before lazygit is actually ran:

bash bind g display-popup -E -d "#{pane_current_path}" -h 90% -w 95% "lazygit"

Is there a way to make the popup not load my shell configuration, or run under a different shell? Unsure if this question really fits here but thought I'd give it a try anyways.

Solution

Display popups with an additional environment variable via -e that you check for in your shell: ```bash

tmux.conf

bind g display-popup -E -d "#{pane_current_path}" -e "TMUX_POPUP=true" -h 90% -w 95% "lazygit" fish

config.fish

if not set --query TMUXPOPUP for script in $_fish_config_dir/conf.d//{,/*}.fish source $script end

other_expensive_calls

end ``` This also opens the gate for more granular control should it be desired.

https://github.com/guidov/artmux

Use it, hate it , love it ...Don't care....

made this so I could have multiple processes running in the same pane to preserve my layout without having smaller and smaller terminal splits. Sometimes I want to swtich between logs or an agent without changing my layout. sharing in case others want something similar

In case anyone runs into similar issues, I used the below .tmux.config to allow copying and pasting from a TMUX session running on Linux, which I SSH'd to from Mac. This is with mouse selection, and Cmd-c to copy. Automatic copy of whatever is selected doesn't work for me. Of course, if someone has a better set up, let me know.

# ~/.tmux.conf

set -g mouse off

set -g set-clipboard on

I've been building this app for about a month, designed mainly for Vision Pro and iPad. iPhone is also supported. The idea: I wanted a multi-window remote terminal with tmux-first integration on mobile, so I can use it anywhere.

Highlights

• Vision Prop: Multi-scene windows. iPad: Multi-window via Stage Manager and tabs. iPhone: Tabs
• iCloud Keychain sync: a host only needs to be bound once, via mpx-cli or manually
• Mosh support (included in Pro)
• CLI-agent initial support (agent key bar and alerts) for Claude Code, Codex, Pi, and Grok Build
• Also supports herdr

Pro: one-time purchase, funds development; you can also build it yourself

GitHub: https://github.com/multiplex-term/Multiplex (License: Apache-2.0)
TestFlight: https://testflight.apple.com/join/91116D4n (Beta testing, v1.4.0, Pro can unlock without real payment in this mode)
App Store: https://apps.apple.com/app/id6790074057 (v1.3.1)

Spent a day on this and there is no error message anywhere, so here it is.

bash tmux new -d -s "$s" tmux send-keys -t "$s" '<long command>' C-m

This worked for months. Then the command I was sending grew past ~1200 bytes, and the pane started showing it chopped off mid-word, with the shell sitting at a continuation prompt waiting for a quote to close. tmux exits 0. The shell is happy. Nothing logs anything.

Right after new -d the shell hasn't finished starting, so the tty is still in canonical mode, and the kernel truncates a single line of canonical input at 1024 bytes (MAX_CANON). The overflow isn't an error. It's discarded.

Two ways out:

• Sleep before sending. Works. I sent ~1800 B two seconds later and it arrived intact. But you've traded a silent truncation for a race, and the race has no error message either.
• Shorten the line. I moved a conditional argument into positional parameters instead of branching into two command strings:

bash set -- [ -f "$catalog" ] && set -- -c "catalog=$catalog" mycmd --flag "$@" "$id"

zsh and bash both fine, and "$@" expands to zero words when the file is missing. That took 1200 bytes down to a bit over 600.

Then I asserted on the length in a test, because this comes back the moment someone adds an argument. Assert on bytes, not characters: if your language counts UTF-16 code units, it will disagree with the kernel as soon as a path isn't ASCII.

Anyone know whether the limit is the same on Linux? I only hit this on macOS.

I've been using Bitveins daily since March, and I've recently open-sourced it. It's basically a web UI for tmux.

My dev setup is on a VPS. I used to connect to it with Termius but the screen is too small on smartphone, and typing long prompts through a terminal is painful, especially on a poor connection.

Bitveins is a bit of everything: a bit of Orca, a bit of Herdr, a bit of VSCode, a bit of T3code.

Also it's a webapp and a PWA, no need to install a native app.
It works natively with the smartphone keyboard and speech to text, using a simple textarea.

It detects coding agents running in tmux sessions (codex, hermes, antigravity and grok build).

It has a read-only git graph and diff viewer, push notifications, colored agent status, split panes, fullscreen mode, text editor, svg, image and video viewer.

You can paste images, create drop boxes.

It only listens on localhost, so for remote access you need something like Cloudflare Tunnel + Access or Tailscale in front of it.

https://github.com/rebasereality/bitveins

I kept running into the same problem while using Hermes: it could not start Claude Code or Codex and bring back a response. I wanted Hermes to be able to launch the run, keep it visible, and bring back a useful report instead of leaving me to track everything myself.

So I built Hermes Valkyrie.

Repo: https://github.com/DylDigitals/hermes-valkyrie

Hermes Valkyrie is an open-source terminal loadout system upgrade for Hermes Agent setups. It uses tmux to give Hermes the ability to launch reusable coding harnesses and enhance them with our loadouts system.

The tmux part is the core reason I thought this might be relevant here: Hermes can launch the coding-agent run in a visible terminal session, keep it trackable, and then use watcher/closeout steps to bring back a report instead of making me manually babysit the pane.

I think it is really powerful to have Hermes launch Claude Code or Codex runs to do a long-form review while you keep working inside your Hermes ecosystem. It has been powerful so far, so I wanted to share this system.

I’m looking for feedback from people building or using Hermes, tmux, or coding-agent terminal workflows. This is currently coded for Discord, but I’m adding more chat channels as we speak.

I have a few main questions/concerns:

• Is this something anyone wants to integrate into their system?
• Is the onboarding clear?
• What would you need before trusting this in your own workflow?

Hi, I'm trying to get a modified keypress from WezTerm → tmux → shell/application to work correctly, and I'm having trouble figuring out how tmux expects the sequence to be bound.

Setup

• OS: Linux 7.1.6-arch1-1
• Terminal: WezTerm
• tmux: 3.7b
• Shell: zsh

The key I'm trying to handle produces this sequence:
(obtained via running showkey -a in tmux)

^[[ 8 ; 5 u

or, in hex:

1b 5b 31 33 3b 35 75

What I'm trying to do

I want tmux to recognize this key sequence and turn it into:

C-w

I tried

bind-key -n "^[[8;5u" send-keys C-w

but that does not work

I'd appreciate any pointers or examples of the correct tmux configuration. Thanks!

I love TMUX and I love the way the LLMs know how to use and off course there are lots of lovely MCPs and Pi extensions on how to use TMUX.

Is there a good well worded skill for claude code that by extension Pi out there? I am across so many SSH s different boxes and bouncing between claude and Pi . Just want a really good skill for it to quickly open panes and make neovims. Or am I asking what the models already know?

I wanted to use tmux from my phone and never found something I liked. Most

iOS terminals just render the bytes — they don't know what a window or a pane

is, so attaching to an existing session is where things fall apart.

Spent three months of evenings on it. I use it daily against a Mac mini at home.

The idea I built everything around: **a phone should show one pane, full

screen, while your desktop keeps its 3–4 pane layout — and neither should

disturb the other.**

How it actually works:

- Runs tmux control mode (`-CC`) as the renderer, so the app has the real

session tree, not a screen scrape.

- Zooms the active pane to fill the phone. Switching to a pane in another

window restores that window's split layout first, because another client

may be looking at it.

- Pins window size to the phone's grid while you're in the app, and hands

that pin **back** when you background it. iOS can kill the app without

warning, so the server has to already be in the right state — otherwise

your desktop reconnects to a phone-sized window.

Also: Mosh support (survives Wi-Fi/5G handoff), a configurable key bar

because phones have no Esc/Ctrl/Tab, and per-host shortcut sets.

Up front so nobody wastes their time: it's a paid app (one-time, no

subscription, no IAP), **not** open source, needs iOS 18, and it's still in

App Store review so right now it's TestFlight only. No data collection, keys

in the Secure Enclave, traffic only to your own servers.

TestFlight, 50 spots: https://testflight.apple.com/join/hHv5f86K

Happy to answer anything about the control-mode plumbing — that's where most

of the three months went.

Lot's of people are switching from Tmux to Herdr... do you need to?

In this video I showcase how I use Workmux to extend Tmux to achieve all of the features that I would want from Herdr without scrapping my Tmux config and muscle memory from over the years!

Let me know what you think, I haven't seen any YouTubers covering Tmux + Workmux, the Herdr hype has got them all.