ParityCheck
Detect environment drift before it breaks production
ParityCheck launched on March 17, 2026.
What it does
Detect environment drift across dev, staging, and production. Compare dependencies, env vars, and DB schema. CLI + SaaS. Free tier. CI/CD ready. Stop 'it works on my machine' issues.
Detect environment drift across dev, staging, and production. Compare dependencies, env vars, and DB schema. CLI + SaaS. Free tier. CI/CD ready. Stop
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Evolution Engine evo by CodeQualMar 2026 · codequal.dev · ▲1I drift detector for your development workflow

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It works on my machine" is still the most common deployment bug I kept running into the same stupid deployment issue. Everything works locally. Tests pass. I deploy. Production crashes. After digging through logs for an hour the problem ends up being something simple like: • a missing environment variable • something added to .env.example but not to .env • a config mismatch between environments The most common one for me was forgetting to add a variable locally after adding it to .env.example. So I built a small tool to catch this instantly. It compares .env and .env.example and tells you if…
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