Mitchell Hashimoto, co-founder of HashiCorp and creator of Ghostty, is launching a new company called Superlogical. Its first product is a server-side terminal multiplexer with long-lived sessions. It is intended to serve as the foundation for a broader “multiplexer for all work” in which human work and AI agents converge.
Software development today takes place simultaneously on local machines, remote hosts, sandboxes, and production systems. Interactive work, automated CI processes, and increasingly parallel-operating agents all exist in separate systems. According to Hashimoto, that is the core of the problem Superlogical aims to solve.
“We believe the missing layer is a durable session around the work itself,” the founder writes in the announcement. Such a session should span applications and environments, provide context by default, and preserve history, while allowing people to keep everything visible and controllable.
More than just tmux 2.0
The company is deliberately starting small with a terminal multiplexer. Anyone familiar with tools like tmux should feel right at home. Yet it’s not a copy. The sessions run server-side, with clients sending input as with SSH and the server maintaining all state. You can close the app, switch devices, and pick up exactly where you left off.
Multiple terminal “blocks” are organized within a single long-running session. Sessions are accessible via the web and native macOS and iOS apps, and live session sharing is built in from the start. Rendering runs on libghostty, the GPU-accelerated library spun off from Ghostty.
Notable names and investors
Superlogical was founded by Jack Pearkes, Alasdair Monk, and Hector Simpson. The company is backed by Notable Capital and Amplify Partners, as well as angel investors including Aaron Levie, Patrick Collison, Tobias Lütke, and HashiCorp co-founder Armon Dadgar.
Hashimoto previously built Vagrant, Terraform, and Vault at HashiCorp, where he served as CEO and CTO for over a decade until the company’s IPO. That company was acquired by IBM in 2024 for billions.
The plan consists of three phases: first, an excellent multiplexer; second, making everything composable; and finally, ensuring the entire system is secure and operational in production. According to the latest reports, the site offers a beta waitlist, and Superlogical promises an open-source release during development.