Find the Best Developer Tools
Hand-picked collection of free developer tools for every part of your workflow — from writing code to deploying to production.
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Explore by Category
Code & IDE
15 tools
API & Network
15 tools
Database & SQL
15 tools
Frontend & Design
15 tools
DevOps & CI/CD
15 tools
Security & Testing
14 tools
Featured Tools
🔧 SQL Formatter Online
Free online SQL beautifier & formatter. Supports MySQL, PostgreSQL, T-SQL and 12+ dialects. Minify, validate, and convert SQL to JSON — all in your browser.
📋 JSON Formatter & Validator
Format, validate, and beautify JSON online. Tree view, diff comparison, and minify — all client-side with zero data sent to servers.
🔐 Base64 Encoder / Decoder
Encode and decode Base64 strings instantly. Support for URL-safe Base64, file upload, and batch processing — fully offline-capable.
All Tools
SQL Formatter
Format and beautify SQL queries online, 15+ dialects
JSON Formatter
Format, validate, tree view JSON
Base64 Encoder/Decoder
Encode/decode Base64, URL-safe, file upload
URL Encoder/Decoder
URL encode and decode strings online
HTML Entity Encoder/Decoder
Convert special characters to HTML entities and back
UUID Generator
Generate UUID v1, v4, v7 with one click
JWT Debugger
Decode, verify, and debug JWT tokens in browser
Regex Tester
Test regular expressions with real-time highlighting
Diff Checker
Compare text, code, and JSON side by side
Timestamp Converter
Convert between Unix timestamps and human-readable dates
Color Picker & Converter
Pick colors and convert between HEX, RGB, HSL formats