https://exe.dev .. docs

exe.dev is a subscription service that gives you virtual machines, with persistent disks, quickly and without fuss. These machines are immediately accessible over HTTPS, with sensible and secure defaults. You can share your web server as easily as you can share a Google Doc. With built-in optional authentication, so you can focus on your thing.

Your VMs share CPU/RAM. Create as many VMs as you like with the resources you have.

I think this will be very useful to create ephermal virtual machines to play with Claude Code etc.,

Jan 10, 2026 — See Sprites - Stateful sandboxes by flyio, read this blog post by simonw Fly’s new Sprites.dev addresses both developer sandboxes and API sandboxes at the same time