crun vs OrbStack

crun is a free, self-hosted OCI container runtime for Linux, written in C. It conforms to the OCI Container Runtime specifications and provides CLI operations for creating, running, executing commands in, listing, pausing, resuming, updating, checkpointing and restoring containers. It can generate a configuration for unprivileged use and creates a user namespace when run by a non-root user. The project documents integration with Podman, an Ansible role for installing a statically linked binary and a Lua binding. Build instructions cover Fedora, RHEL/CentOS Stream 9 and 10, Ubuntu, Alpine and openSUSE Tumbleweed; release binaries are listed for Linux amd64 and arm64, including variants without systemd. Official release artifacts are signed, with GPG verification commands provided. The project reports a benchmark of 100 sequential `/bin/true` containers completing in 1.69 seconds with crun versus 3.34 seconds with runc on the author's machine. The manual marks cgroup v1 support as deprecated. Regular patch releases target the latest version; fixes for earlier versions are best effort and not guaranteed.

OrbStack is a macOS app for running Docker containers and Linux machines. It can also run a lightweight, single-node Kubernetes cluster for local development, with a GUI and network integration. The maker says it starts in two seconds and uses optimized networking, file systems, and x86 emulation. Docker CLI, Compose, Earthly, and VS Code Dev Containers work with OrbStack. Linux machines integrate with macOS networking and file sharing, and support SSH agent forwarding and remote VS Code. OrbStack requires macOS 14.0 or later. Personal, non-commercial use is free; freelance, business, and commercial users need a license for each user, with up to five devices covered per user. Pro costs $8/user/mo, billed as $96 annually, and adds Debug Shell and priority support. Enterprise lists SAML SSO and invoice and PO payments, with no price listed. A trial is available without a card, and the FAQ gives users a 30-day grace period to purchase a license. Linux graphical apps and GPU are listed as unsupported.