Time, Cron & System Tools for Developers
These are the small tools that save you from Stack Overflow searches — building cron schedules without memorizing the syntax, converting timestamps between formats, looking up HTTP status codes, and calculating Unix file permissions.
Cron syntax — five fields representing minute, hour, day-of-month, month, and day-of-week — is notoriously hard to remember. The Cron Builder lets you set schedules by clicking options instead of memorizing that */5 means every 5 minutes or that 0 0 * * 0 means weekly on Sunday at midnight. It shows the next 5 scheduled run times so you can verify the expression is correct.
The Timestamp Converter handles the constant back-and-forth between Unix timestamps (used in APIs, databases, and logs) and human-readable dates. It auto-detects whether you've pasted seconds or milliseconds and shows the converted result in multiple formats simultaneously.
HTTP Status Codes is a reference tool — every developer needs to look up status codes regularly. Is 403 'forbidden' or 'unauthorized'? What's the difference between 301 and 308? The tool organizes all codes by category (1xx informational, 2xx success, 3xx redirection, 4xx client error, 5xx server error) with practical descriptions.