Networking Playgrounds
Remote sandbox environments for learning and experimentation — without setup or cleanup. Launch fresh Linux VMs, Docker hosts, or Kubernetes clusters in seconds, publish ports, share terminal sessions, and connect over SSH.
FlexBox
Your perfect base playground. Create purpose-built sandbox environments by choosing up to five VMs with custom root filesystems and organizing them into any number of local networks.
MiniLAN (Ubuntu, Docker)
Four Ubuntu servers with Docker pre-installed connected into a single network.
Docker Swarm
A three-node swarm accompanied by an ephemeral registry for ease of experimentation. Batteries included!
Dual-Network Router Lab
Five Ubuntu VMs across public and private subnets, joined by a dual-homed router. The private subnet has no direct Internet access.
USE Practice
Practice Linux USE-method investigations against randomized host-level scenarios. Run `use-practice` to see what the options are, and put some load on the system to practice your USE methodology investigation skills. It already has the use-tool (https://github.com/lpmi-13/use-tool) installed, so you can begin with that, or just run a free-form investigation.
Uncloud Cluster
A multi-node Uncloud cluster with a standalone control node. About Uncloud: https://github.com/psviderski/uncloud
Tailscale Homelab Access
A multi-node K3s cluster to demo connecting and troubleshooting a homelab remotely via tailscale. All username/passwords are admin/admin123