DataToolkit
Free developer tools for encryption, network diagnostics, text processing, and data conversion.
Popular Tools
Editors
JSON, XML, YAML, Markdown, and text editors with syntax highlighting
Cryptography
Hash with MD5, SHA-1, SHA-256, and SHA-512
Network Tools
IP lookup, WHOIS, reverse DNS, ping, and subnet calculator
Generators
UUID, secure passwords, QR codes, and barcodes
Utilities
Base64, URL encoder, case converter, cron builder, and regex tester
Data Collections
Mobile networks, profanity lists, and service ports
Reference
ASCII table, HTML entities, emoji picker, and regex cheat sheet
Convert
Convert Word, HTML, and RTF documents to Markdown
Learn
View all →How Passwords Are Hashed
Why SHA-256 alone is not enough — bcrypt, salting, and Argon2 explained.
NetworkingWhat is a Subnet Mask?
CIDR notation, network vs host bits, and common subnet sizes.
SchedulingWhat is a Cron Expression?
Five-field syntax explained field by field with real-world examples.
Open Data Repository
Access raw datasets including mobile networks, profanity lists, service ports, and more on GitHub.
Visit GitHub Repository