| Metric | core-js | Mustache | Winner |
|---|---|---|---|
| Performance | 36 | 36 | Tie |
| Accessibility | 88 | 89 | Mustache |
| Best Practices | 84 | 83 | core-js |
| SEO | 91 | 91 | Tie |
| Security | 65 | 65 | Tie |
| TTFB | 385ms | 378ms | Mustache |
| Composite | 73 | 72 | core-js |
core-js and Mustache are closely matched, each leading in different categories. core-js has a composite score of 73 while Mustache scores 72.
Choose core-js when your primary concern is best practices. Its audit data shows consistent strength in these areas across the sampled sites.
Choose Mustache when your primary concern is server response time and accessibility. Its audit data shows consistent strength in these areas across the sampled sites.
Scores are medians across 1627 audited core-js sites and 49 audited Mustache sites in the BeaverCheck database. Every audit runs the same 100+ checks — Lighthouse performance, security headers, accessibility, SEO, server response time — against a real URL. No vendor input, no sponsorship, no affiliate links. Read the full methodology →
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