10 Underrated Free Tools That Should Be Way More Popular

I've been building free tools nonstop. Here are 10 that deserve way more attention: 1. CSS Glassmorphism Generator Create frosted glass effects with live preview. Blur, opacity, saturation, border controls. → https://devtools-site-delta.vercel.app/css-glassmorphism 2. Regex to English Translator Paste any regex, get a plain English explanation. Supports all common patterns. → https://devtools-site-delta.vercel.app/regex-to-english 3. Sleep Calculator Tells you the best time to sleep/wake based on 90-minute sleep cycles. → https://devtools-site-delta.vercel.app/sleep-calculator 4. Email Subject Line Tester Scores your email subject with 9-point analysis. Spam check, power words, personalization. → https://devtools-site-delta.vercel.app/email-subject-tester 5. JSON Diff Compare two JSON objects and see exactly what changed — additions, removals, modifications. → https://devtools-site-delta.vercel.app/json-diff 6. Text Case Converter 12 case formats in one tool: UPPER, lower, Title, camel