Lumbridge vs Rex
A terminal multiplexer in beta from Superlogical that keeps terminal sessions alive on a server so you can close the app and resume from another device. Lumbridge is the open engine a company runs on when agents do the work: terminals, mail, notes, library, voice and a software factory on your own machines.
Rex
Pick Rex if you want a fast, persistent terminal from the people behind Ghostty and are happy to join a waitlist for a closed beta.
License not statedNot stated (waitlist beta). Checked 2026-11-10.
Lumbridge Not released. Built from source today.
Pick Lumbridge if you need open source you can host and change, or want more than the terminal: mail, library, speech, factory and model serving.
Open source · Apache-2.0All twelve repositories open on November 13, 2026.
01 · Side by side
What each covers.
| Area | Lumbridge | Rex |
|---|---|---|
| Terminals and agents | Core, TUI | Yes |
| Desktop app | App, Mods | Yes |
| Phone | Mobile | Partly |
| No | ||
| Docs and code library | Library | No |
| Notes | Notes | No |
| Voice and speech | Voice, Speak | No |
| Software factory | Factory | No |
| Models and inference | Computer, Lumbridge 1 | No |
| Whole engine | All twelve parts, on Ubuntu | No |
| License | Apache-2.0 | Not stated |
| Price | Free; model API by the token | Not stated (waitlist beta) |
| Written in | Mostly Rust | Not stated (built on libghostty, per the founder’s post) |
| Runs on | Ubuntu first; macOS for the desktop parts | Web, macOS and iOS, per the site; access is by waitlist |
02 · Honestly
Where Rex is ahead.
- It is in beta with outside testers; Lumbridge has no public release until November 13, 2026.
- It builds on libghostty, a widely used terminal core, and the team includes the creator of Ghostty.
- The site lists live session sharing with other people and a web client. Our pages list neither for Core.
03 · The difference
What Lumbridge adds.
- The source opens under an Apache-2.0 based license. Rex states no license; the site says only that open-source releases may be announced.
- Core records agent status that programs report themselves, and lets agents start and wait on child agents.
- Mail, Notes, Library, Voice, Speak, Factory and Computer are parts of the same stack. Rex is a terminal multiplexer so far.
04 · More
Other comparisons.
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