Developer Tools
Free Online Developer Tools
A growing collection of browser-based tools built for developers, designers, and anyone who works with data and code. Every tool runs entirely client-side — nothing is sent to a server.
Log File Generator
Generate realistic mock log files for development, testing, and demos. Supported formats include Apache and Nginx
combined access logs, Apache error logs, Nginx error logs, SSH/auth logs (matching Debian and Ubuntu
auth.log format), Linux syslog, MySQL error logs, and PostgreSQL logs.
Options include line count (up to 5,000), date range, error rate, and IP address type (random public, private LAN,
mixed, or single subnet). Output can be copied to the clipboard or downloaded as a .log file. Useful
for validating log parsers, populating SIEM demo environments, benchmarking log shippers, and creating realistic
documentation examples.
Mock Data Generator
Build custom datasets with realistic fake names, emails, phone numbers, addresses, dates, colors, UUIDs, and dozens of other field types. Export as JSON, CSV, or SQL INSERT statements. Useful for seeding development databases, populating UI mockups, and creating test fixtures.