Runmark — Know what makes your code run
Interactive Simulator

Environment Drift Playground

Change the values below and see how Runmark detects differences between environments.

Try Preset Scenarios:

Environment A

Your Local Machine (Baseline)

Local Dev

Environment B

Team Coworker / CI Runner

Target Env

Environment Drift Detected

5 discrepancy factor(s) identified between Environment A and B.

5 Discrepancies
Python Runtime changed:3.12.43.11.9

Runtime version discrepancy may trigger syntax errors or incompatible binary wheels.

Warning
Django Framework:5.1.2
Match
Operating System changed:Windows 11Ubuntu 24.04 (Linux)

OS differences can cause path delimiter issues, line-ending mismatches, or missing C bindings.

Warning
Node.js Runtime changed:22.14.020.18.0

Runtime version discrepancy may trigger syntax errors or incompatible binary wheels.

Warning
Package Manager changed:npmyarn

Package Manager versions differ between machines.

Warning
PostgreSQL Service:16.3
Match
Redis Service changed:7.2.4Stopped

Redis Service is required on Environment B but is currently Stopped.

Critical Drift
Docker Container Tool:28.0.1
Match
This is an educational browser demo. Real scanning is performed deterministically on your local machine using the runmark CLI.