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Discover tools from different categories to expand your toolkit beyond Math.
Chmod Calculator
Calculate and convert between symbolic and numeric file permissions for Unix/Linux systems using the chmod command format with our free calculator.
Sysops
ASSIST Screening Test
Use the WHO ASSIST (Alcohol, Smoking and Substance Involvement Screening Test) to assess substance use risks across multiple drug categories.
Health
Rate Limiter
Configure and test rate limiting policies for APIs. Prevent abuse and control traffic with sliding window and token bucket algorithms.
Cybersecurity
Time Zone Converter
Convert times between different time zones around the world. Free time zone conversion tool for international meetings and calls.
Datetime