100% In-Browser Simulated Environments

Interactive DevOps Playgrounds

Type real commands in high-fidelity browser terminals. No credit card, no cloud bills, no setup, and nothing to break.

Sub-Millisecond Speed

0ms network lag with local JS state

Zero Sandbox Risk

Isolated memory state, 100% safe

Visual State Inspectors

Live cards for active pods & containers

🐳

Docker Playground & Lab

Run containers, pull images, inspect ports, configure volumes, and build Dockerfiles in an instant in-memory simulated Docker daemon.

Supported Commands:

$ docker run -d -p 80:80 nginx

$ docker ps

$ docker images

12 Popular Images AvailableLaunch Terminal

☸️

Core Enterprise

Kubernetes Cluster Simulator

Practice kubectl imperatives, deploy microservices, expose services, scale replicas, and inspect pod events with zero cluster fees.

Supported Commands:

$ kubectl get pods

$ kubectl create deployment api --image=nginx

$ kubectl scale deployment api --replicas=3

Full Namespace & Workload SupportLaunch Terminal

🎓

Exam Prep

CKA Exam Simulator Lab

Simulate a real multi-node Kubernetes cluster (control-plane + 2 worker nodes) with pre-configured production workloads, cordon, and drain tasks.

Supported Commands:

$ kubectl get nodes

$ kubectl cordon cka-worker-1

$ kubectl drain cka-worker-1 --ignore-daemonsets

Real CKA Exam Scenario ScaffoldingLaunch Terminal

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Prerequisite

Linux & Bash Sandbox

Full hierarchical virtual file system (VFS) with cd, ls, cat, touch, mkdir, grep, pipes (|), and stream redirections (> and >>).

Supported Commands:

$ ls -la

$ cat README.md

$ cat app/package.json | grep version

Full In-Memory VFS HierarchyLaunch Terminal

🌍

IaC Workflow

Terraform IaC Sandbox

Parse HCL code blocks, run terraform init, fmt, validate, generate execution plans, and apply simulated AWS VPC & EC2 resources.

Supported Commands:

$ terraform init

$ terraform plan

$ terraform apply

$ terraform show

AWS Provider & State EngineLaunch Terminal