Compare
Termuna vs tmux, Termius, and Mosh.
These tools all attack the same pain from different angles: a terminal session that dies too easily. Here is an honest map of what each one actually solves, including where the others are the better pick.
The matrix
| What you need | Termuna | tmux (+ SSH) | Termius | Mosh | Eternal Terminal |
|---|---|---|---|---|---|
| Session keeps running when the window closes | Yes, a local daemon owns the shells | Yes, on the machine tmux runs on | No, sessions are per-connection | While the client roams, yes | Yes, reconnects to the same shell |
| Pick up the same live session on the web or a phone | Yes, built in | Terminal-only: SSH in and attach by hand | No, each device opens its own connection | No | No |
| Survives network drops and IP changes | Yes, seq-tracked resume replays the gap | Yes, after you reconnect and reattach | Reconnects, session state depends on the server | Yes, this is Mosh's core feature | Yes, this is ET's core feature |
| Reach a box behind NAT or a VPN, no inbound port | Yes, the daemon dials out to the relay | No, SSH needs a path in (bastion or jump host) | No, it is an SSH client | No, needs SSH reachability | No, needs SSH reachability |
| Workspace survives a host reboot | Yes: history, tabs, splits, and working directories resurrect | No (plugins like tmux-resurrect restore parts) | No | No | No |
| End-to-end encrypted mirror of the live session | Yes, the relay stores only ciphertext | No cloud component | No (vault data is E2E, sessions are not mirrored) | No cloud component | No cloud component |
| Encrypted SSH vault shared with a team | Yes, wrapped per member | No | Yes | No | No |
| Works fully offline, no account | Yes, sync is opt-in | Yes | Client works, sync needs an account | Yes | Yes |
| Price | Free terminal, paid cloud continuity | Free, open source | Freemium subscription | Free, open source | Free, open source |
When the others are the better pick
No tool wins everything, and pretending otherwise would waste your time.
- Pick tmux if you live on one server, want zero cloud involvement, and are happy attaching over SSH. It is free, everywhere, and battle-tested; Termuna's daemon plays the same role locally.
- Pick Mosh if your only problem is a flaky link to a single host and you want nothing new on your other devices. Roaming and local echo are excellent, but there is no multiplexing, no mirror, and no phone.
- Pick Eternal Terminal if you want SSH that transparently reconnects and nothing more; pair it with tmux for persistence.
- Pick Termius if what you mainly need is a polished cross-platform SSH client with a synced host vault, and per-device sessions are fine for you.
When Termuna is the better pick
Pick Termuna when the thing you care about is the session itself: it keeps running on your machine when the lid closes, continues on the web or your phone exactly where it stopped, survives network drops with a replayed gap, and resurrects the whole workspace after a reboot. All of it mirrors end to end encrypted, so the relay in the middle can route your session without ever being able to read it (how that works). The local terminal is free forever; only the continuity is paid.