Classify message urgency from severity, deadline, sentiment, recipient, and business impact

Parse emails into local, domain, subaddress parts — detect free, disposable, and business emails.

Check if text contains any from a list of keywords or phrases

Score email address activity level based on engagement signals

Detect service coverage gaps by area demand, existing reach, wait time, and capacity signals

Detect role-based emails like info@ support@ admin@ noreply@

Score renewable energy curtailment risk from grid data

Public Instagram profile metrics and engagement data

Calculate antenna gain and radiation pattern parameters

Validate credit card numbers via Luhn algorithm and detect card type.

Split bills and tips — equal split or per-person by order amount — with rounding suggestions.

Get Western and Chinese zodiac signs, traits, and compatibility from any birthday.

Compare all 8 planets — weight calculator, radius/mass/gravity ratios, and full data.

Score security log events for anomalies — brute force, off-hours access, privilege escalation, data exfiltration.

Parse, compare, sort, and validate semantic version strings.

Count working days between dates, add N business days, with 2024-2025 US holiday exclusions.

Parse recipe ingredient strings into structured amount, unit, prep, and ingredient data.

Project retirement nest egg, FIRE number, safe withdrawal, and Social Security FRA.

Benchmark salaries for 15 roles by location with P25/P50/P75/P90 and compa-ratio.

Convert colors between HEX, RGB, HSL, HSV, and CMYK — with WCAG contrast ratio check.