🛠 100+ Free Developer Tools & Resources

A curated list of the best free online tools for developers. No signup required for any of these.

⭐ Our Free Tools

Dev Toolkit — JSON formatter, Base64, SHA-256, JWT decoder, UUID generator, cron explainer, JSON→TypeScript
RegEx Tester — Test patterns with live highlighting and explanations
Security Check — Email breach check, password strength, password generator
QR Code Generator — URLs, WiFi, email, phone. PNG download
URL Shortener — Shorten links instantly using TinyURL/is.gd/v.gd
Crypto Price Monitor — Live BTC, ETH, SOL, ADA, XMR prices

📝 Code Formatting & Conversion

JSON Formatter — Format, validate, minify JSON
ConvertJSON — JSON to CSV, XML, YAML
Prettier Playground — Format JS, CSS, HTML
SQL Formatter — Format SQL queries
XML Formatter — Format XML

🔐 Security & Encoding

Breach Check — Check if email is in data breaches
HaveIBeenPwned — Data breach lookup
Base64 Encode — Base64 encoder/decoder
URL Encoder — URL encoding/decoding
JWT Debugger — Decode and verify JWT tokens

🎨 Design & UI

QR Generator — Create QR codes for URLs, WiFi, contact info
CSS Gradient — Create CSS gradients
Coolors — Color palette generator
Font Awesome — Free icons
Unsplash — Free stock photos

⚡ API & Testing

RegEx Tester — Test regex patterns
HTTPBin — HTTP request/response testing
Webhook.site — Test webhooks
JSONPlaceholder — Fake REST API for testing

📊 Data & Crypto

Crypto Prices — Live crypto price monitor
CoinMarketCap — Crypto market data
CoinGecko — Crypto data & API

🐍 Python Resources

Python Automation Toolkit — 50+ scripts ($5, BTC)
Python Docs — Official tutorial
Real Python — Tutorials and guides
PyPI — Python package index

🤖 Trading & Bots

Trading Bot Template — Python crypto trading bot ($15, BTC)
CCXT Docs — Crypto exchange library
Backtrader — Python backtesting

💚 Found this useful?

This list is free forever. Tip in BTC if it helped you:

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← Back to all tools | Last updated: 2026-09-25