Compare · Deep dive

dev-mux vs Terragon

Q: What happened to Terragon?

Terragon Labs shut the platform down on January 16, 2026, after roughly eight months, without ever charging users. An Apache-2.0 snapshot of the code is on GitHub, explicitly unmaintained.

Q: What is the best Terragon alternative?

For fire-and-forget cloud tasks, the model vendors' own offerings (Claude Code on the web, Codex cloud tasks) now cover it. If you want the parallel-agents-with-a-live-dashboard experience without vendor-cloud risk, dev-mux gives you that on machines you own: persistent interactive sessions, a fleet-wide status map, and mobile surfaces — self-hosted, so it can't be shut down out from under you.

Q: Doesn't self-hosting mean more work?

Less than you'd think: a spoke needs only bash, tmux, and git — no daemon, no Docker. The managed hub is operated for you (single-tenant, on your tailnet), or Custom hosting puts it fully inside your perimeter.

Terragon was a good product: fire off background coding-agent tasks, each in a fresh cloud sandbox with your repo cloned in, watch a live dashboard, get PRs out. It was free — it never charged anyone — and in January 2026 it shut down, roughly eight months after launch. Every workflow built on it stopped working the same day. That's the comparison, really.

TL;DR — If you liked Terragon's model — many parallel agents, watch from anywhere, PRs out — the durable version of it is agents running on machines you own, watched by a control plane you host. Your code never moves to a vendor's cloud, and no shutdown email can take the workflow away. That's dev-mux.

What Terragon was

A fully vendor-cloud platform: each task got an ephemeral Docker sandbox on Terragon's infrastructure with your repository cloned onto it, a real-time status dashboard, Slack notifications, and multi-CLI support (Claude Code, Codex). The post-shutdown code snapshot is Apache-2.0 on GitHub, explicitly unmaintained. Its fate is also a market lesson: pure-cloud background-agent execution was commoditized by first-party offerings from the model vendors themselves.

At a glance

As of July 31, 2026. If something here is stale, tell us.

	dev-mux	Terragon (†2026)
What it is	Self-hosted fleet control plane	Cloud background-agent platform (defunct)
Status	Live product, company behind it	Shut down January 2026
Where code ran	Your machines; hub never stores code	Cloned onto Terragon's cloud sandboxes
Session model	Persistent, interactive tmux — interrupt/steer live	Ephemeral fire-and-forget sandboxes
Platform risk	Self-hosted — nothing to shut down but you	Absolute — and realized
Surfaces	Browser, TUI, iOS, glasses, Telegram	Browser dashboard + Slack (while it existed)
Price	Solo $25/mo · Team $100/mo	Free — never monetized

What Terragon got right

The dashboard-of-parallel-agents UX — a live view of many concurrent runs with PRs out the other side was the correct instinct.
Zero setup — nothing to install; a fresh environment per task.
Honest exit — an open-source code snapshot and a clean shutdown beat a slow fade.

Where dev-mux is a different layer

You own the substrate. dev-mux agents run on your hardware over your tailnet. There is no platform to shut down — the vendor risk Terragon's users ate simply doesn't exist in this architecture.
Interactive, not fire-and-forget. Terragon tasks ran to completion in sealed sandboxes. dev-mux sessions are live tmux: watch an agent think, interrupt it, steer it mid-run from any surface.
Your code stays home. Terragon's model required cloning your repo to its cloud. dev-mux's hub never stores code; nothing leaves your perimeter.
Paid on purpose. Terragon gave the product away and died without ever charging. dev-mux charges from day one — that's what keeps the lights on for the people who depend on it.

Common questions

What happened to Terragon?

Shut down January 16, 2026, ~8 months after launch, never having charged. An Apache-2.0 code snapshot remains on GitHub, unmaintained.

What is the best Terragon alternative?

For fire-and-forget cloud tasks: the model vendors' own offerings. For a live dashboard of parallel agents without vendor-cloud risk: dev-mux, on machines you own — it can't be shut down out from under you.

Doesn't self-hosting mean more work?

A spoke needs only bash + tmux + git — no daemon, no Docker. The managed hub is operated for you on your tailnet, or Custom hosting puts it fully inside your perimeter.

Platforms shut down. Your machines don't.

Get early access

Written 2026-07-31 against Terragon's shutdown announcement, code snapshot, and archived pages. Terragon is a trademark of its owners; no affiliation or endorsement implied. Corrections welcome.