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, camelCase, snake_case, kebab-case, and more.
→ https://devtools-site-delta.vercel.app/text-case
7. Fancy Text Generator
12 Unicode font styles that work on Instagram, Twitter, TikTok, Discord.
→ https://devtools-site-delta.vercel.app/fancy-text
8. Docker Compose Generator
Visual builder with presets for Node+Mongo, Postgres, WordPress, Nginx.
→ https://devtools-site-delta.vercel.app/docker-compose
9. SQL to MongoDB Converter
Paste SQL, get MongoDB shell commands. Supports SELECT, INSERT, UPDATE, DELETE.
→ https://devtools-site-delta.vercel.app/sql-to-mongodb
10. Calorie Calculator
BMR, TDEE, macros. Mifflin-St Jeor equation. Lose/maintain/gain goals.
→ https://devtools-site-delta.vercel.app/calorie-calculator
All 320 tools at DevTools.run. What tools do you wish existed?
Top comments (0)