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Discover tools from different categories to expand your toolkit beyond Sysops.

Quickly scan URLs for potential security threats. Check for phishing, malware, and other security risks before visiting websites.

Convert between pressure units including PSI, bar, Pascal, atmosphere, and mmHg. Essential for tire pressure, weather, and engineering applications.

Solve right triangles using Pythagorean theorem with hypotenuse and leg calculations

Browse calendar, view holidays and plan events with our interactive online calendar tool. Free, easy-to-use calendar with customizable holidays.