Rex

What Rex is

Rex is a terminal multiplexer from Superlogical, the company founded in 2026 by HashiCorp co-founder and Ghostty creator Mitchell Hashimoto. It keeps many terminal blocks inside a long-lived session you can close, reconnect to from another device and resume exactly where you left off.

How it works

• Built on libghostty: the MIT-licensed core of the Ghostty terminal.
• Server-side sessions: the client sends input to a Rex server that holds session state, while a smart client renders and scrolls locally (per The Register).
• Native feel: scrollback, selection and scrolling work natively; program activity status.
• Multiplayer: live session sharing built in from the start.

Availability

Public testing began October 5, 2026 with the macOS app, which runs its own Rex server and connects to others. Linux and Windows servers and iOS, Linux and Windows clients are in progress. Invites go to the waitlist in waves.

Pricing

Free, no account required, fully self-hostable; Superlogical says the clients and servers will not be directly monetized.

Team and backers

Mitchell Hashimoto, Jack Pearkes, Alasdair Monk and Hector Simpson. Backed by Notable Capital, Amplify Partners and angels including Patrick Collison, Tobias Lütke, Guillermo Rauch and Aaron Levie.