ColliePWA vs T3 Code
Both let you reach coding agents on your own computer from your phone, and both are open source. T3 Code is a desktop app that runs your agents, with phone apps as a remote. ColliePWA is a web app that attaches to the panes you already run.
T3 Code details checked on 7 November 2026 from t3.codes.
What ColliePWA brings
Self-hosted, no relay
Your machine serves the app, with no account and no vendor server in the path.
Your desk stays put
It hooks into the multiplexer you already run. No wrapper CLI, no new desktop app.
Pick up mid-turn
The phone shows the same panes as your desk. Answer there, then sit down where you left off.
WalkyTalky messages
Agents send each other short signed messages across your crew, and you can message any session.
Crew failover
If the lead goes down, a deputy you named opens its standby door for your phone.
Large screens
On a tablet or an open foldable, several panes sit side by side beside a sidebar.
Rows led: ColliePWA 4, T3 Code 1.
A green check marks the side that leads on that row.
| Feature | ColliePWA | T3 Code |
|---|---|---|
| What you install | A web app your machine serves | Desktop app, web app, and iOS and Android apps |
| Source code | Open source, MIT | Open source, MIT |
| Price | Free | Free; you bring your own agent subscriptions |
| Connection | Phone browser to your machine, via Tailscale by default | T3 Connect cloud sign-in, LAN pairing, Tailscale HTTPS or SSH |
| Multiplexers | Leads on this row. Herdr and the Herdr app; tmux and zellij are experimental | None; T3 Code runs agents itself |
| Agents | Any terminal agent in your panes | Claude Code, Codex, Cursor, Grok Build, OpenCode and more |
| What needs you | Status view lists waiting agents first | Approvals in the conversation; four permission modes per thread |
| Control keys | Leads on this row. Keys tray: Esc, Ctrl+C, arrows, modifiers, F1 to F12 | Chat view plus a remote terminal |
| Push notifications | Opt-in; on iPhone, only from the home-screen app | Notifications on the phone, grouped by thread |
| Voice input | On-device dictation with Whistle, or on your host; opt-in | On-device dictation on phones |
| Lock Screen and Apple Watch | Not available | Leads on this row. Live Activities on iOS; no Apple Watch app |
| Machines and devices | Crews: several machines behind one URL, with failover | Three linked machines free with T3 Connect; more with a paid plan |
| Agents message each other | Leads on this row. WalkyTalky: signed messages between sessions, across the crew | Not documented |
| If a machine goes down | Leads on this row. A deputy you named takes over for your phone | Not documented |
T3 Code
Where T3 Code is ahead
- T3 Code has native iOS, iPad, Vision and Android apps. ColliePWA is a web app in your phone's browser.
- T3 Connect reaches your machine with no router setup and no tailnet, and pairs by QR code. ColliePWA needs a route to your machine, Tailscale by default.
- It has a git and pull request workflow: a branch per thread, one-button commit, push and PR, and PR review on the phone.
- It has four permission modes per thread, and on the phone, Live Activities, widgets and offline message queuing.
ColliePWA
Where ColliePWA is ahead
- Your desktop does not change. T3 Code is a new desktop app that runs your agents, so you move your work into it. ColliePWA attaches to the panes in your multiplexer.
- ColliePWA has no cloud route at all, and your machine serves the app. T3 Code offers T3 Connect, a cloud route, beside LAN, Tailscale and SSH.
- The phone shows the same panes as your desk. Answer from the phone, sit down again, and the terminal is where you left it.
- WalkyTalky lets one agent session send a short signed message to another, on any machine in your crew. You can message any session from your phone too.
- A crew puts several machines behind one URL. If the lead goes down, a deputy you named opens its standby door and your phone connects through it.
T3 Code · ColliePWA
Which one to pick
Pick T3 Code if you want one desktop app that runs your agents, with native phone apps, a git and pull request workflow, and a route that needs no tailnet.
Pick ColliePWA if you run agents in Herdr, tmux or zellij and want your desk to stay as it is. It fits if you want no cloud route and no new desktop app.