Ferrix vs Herdr
Ferrix
github.comHerdr
herdr.devSide by side
| Figure | Ferrix | Herdr |
|---|---|---|
| Price from | — | Free |
| Free plan | — | Yes |
| Free trial | — | — |
| Open source | — | — |
| Windows | — | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| API | — | Yes |
| Self-hosted | — | Yes |
| Plans published | 0 | 1 |
| Spec score · Terminal Multiplexers | 7.6 (#14) | 8.1 (#7) |
| Plugins | Its plugin architecture is WASM-based, and the README describes it as sandboxed. | Community plugins are published on GitHub and discovered through the herdr-plugin topic; Herdr says marketplace listings are not reviewed. |
| Product | Ferrix is a Rust terminal multiplexer inspired by GNU Screen and tmux. | Herdr is a background runtime that keeps coding agents’ terminal sessions running so users can return to them from another machine. |
| Remote access | Remote sessions support TCP/TLS, SSH tunnels, and Mosh transport. | Users can add remote machines over SSH and see their workspaces and agents alongside local ones. |
Plans
In their own words
Herdr
Herdr is a background runtime for keeping coding agents’ terminal sessions available when you move between machines. It brings workspaces, tabs, panes, and agents into one terminal interface, with status labels that distinguish working, blocked, and idle agents. Herdr says it detects 22 agent command-line tools out of the box, including Claude Code, Codex, Cursor, OpenCode, Grok, Copilot, and Hermes. Panes and processes continue running when a client detaches, and saved layouts can be restored after a server restart. Integrations can report session identities for resuming after a restart, and some also report agent state. You can add SSH-accessible machines and view their workspaces alongside local ones. The runtime includes a local socket API and CLI for scripts, tools, and agents. It is free under the Apache License 2.0 and runs on macOS, Linux, and Windows. Pane screen history is off by default because terminal output may include sensitive information. Herdr Cloud is described as coming soon.