EnvCompare

Compare environment configurations across dev, staging, and production. Find missing keys, value differences, and inconsistencies between any number of config files. Supports .env files, JSON configs, and YAML configs. Auto-detects format. Masks sensitive values (passwords, tokens, API keys) in output. Full matrix view showing every key across every environment. Scores consistency A+ to F. Dark-themed HTML reports. CI/CD ready — exit code 2 for critical missing keys, exit code 1 for high-severity diffs. Zero dependencies — single Python file.