Side by side
amux vs Herdr
Both stand on terminal multiplexers. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan LinuxMac
amux combines terminal pane controls, agent-facing CLI features and a mailbox for shared workflows. Users who depend on session groups or advanced hooks may need tmux for those functions.
Visit amux Free plan APILinuxMac+2
Herdr focuses on persistent terminal sessions for coding agents across local and SSH-accessible machines. Its runtime is free, while the planned Herdr Cloud connection is described as coming soon.
Visit HerdrThe facts
| amux | Herdr | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Linux, Mac | API, Linux, Mac, Self-hosted, Windows |
| Lowest paid plan | Free or on request | Free or on request |
| Plans published | 1 | 1 |
| Maker | Not published | Not published |
| Website | github.com | herdr.dev |
| On terminal multiplexers | #3 of 29 | #1 of 29 |
amux: what it does well
- Coordinates human keybindings and agent CLI workflows in panes.
- Captures sessions as structured JSON.
- Pane history can survive reloads and crash recovery.
- Built-in mailbox supports pane-to-pane messages.
- Free and MIT licensed.
What to know first
- Does not implement every tmux feature.
- First server start requires ncurses `tic`.
- Default scrollback is 5,000 lines per pane.
Herdr: what it does well
- Keeps panes and processes running after detachment
- Restores saved layouts after server restart
- Detects 22 agent CLIs out of the box
- Free and open source under Apache License 2.0
What to know first
- Herdr Cloud is not yet available
- Pane screen history is off by default
- Remote machine access uses SSH