forkd

Why we included this project

Most agent workloads hit a wall when you try to scale them: each VM cold boot is slow and heavy, but sharing processes sacrifices isolation. forkd sidesteps that by building on Firecracker. A parent microVM boots once with your runtime loaded, pauses to disk, and then children fork from it, sharing memory copy-on-write. That gives you KVM isolation per child with startup costs close to a process fork. If you are running parallel agents or tool-execution pipelines that need to be isolated from each other, this changes the math. The branch mode also lets you snapshot a running VM, which is handy for checkpointing state.