FDA food recall search (openFDA) - product, reason, firm, classification and status

US Treasury yield curve - 1 month to 30 year yields with 1d, 1w, 1m and 1y changes in basis points, 2s10s spread and inversion flag

Email authentication posture for a domain - SPF with lookup count, DMARC policy and reporting, DKIM selectors, MX, MTA-STS, TLS-RPT and BIMI with prioritised issues

Check an EVM address against the ScamSniffer blacklist of wallet drainer, phishing and scam addresses and report whether it is flagged and the list size

Superfund sites near an address or coordinates (EPA NPL) - status, distance, hazard score and cleanup dates

Active hurricanes and tropical storms - NHC current storms with category, wind, pressure, position, movement and advisory link

Earnings calendar for any date - reporting companies, timing, market cap and consensus EPS

OpenSSF Scorecard for a GitHub repository - overall 0-10 score and every security check (branch protection, signed releases, SAST, pinned deps) with weakest areas

Snowpack near a western U.S. or Alaska location (SNOTEL) - snow water equivalent, depth and percent of median

NASA image and video library search - titles, descriptions, dates, keywords and thumbnails for Apollo, Hubble, Webb and other missions

Space weather now - NOAA geomagnetic storm, radio blackout and solar radiation scales, Kp index and 24h peak, live solar wind speed and Bz, aurora outlook and 3-day probabilities

Solar panel output calculator - annual and monthly kWh for a PV system at any lat/lon from PVGIS, with optimal tilt, specific yield and irradiation

ITIS species taxonomy lookup - scientific name to taxonomic serial number, rank, full kingdom-to-species lineage, child taxa and common names in English and other languages

Autonomous system holder and announced IP prefixes by ASN from RIPEstat - IPv4 and IPv6 ranges currently routed in BGP and registry block information

Salary raise calculator - increase amount, new salary and monthly gross pay

Running pace and speed calculator from distance and time - per kilometer and per mile

Tip, tax and total bill calculator from subtotal, tax rate and tip rate

Binomial, Poisson and normal distribution probabilities - exact, at most, at least, ranges, z-scores and quantiles with mean and standard deviation

Prescribable drug names from NLM RxTerms with route, available strengths, dose forms and RxCUI identifiers for medication autocomplete and lookup

Find the real and complex roots of a polynomial up to degree 6, with discriminant and vertex for quadratics and a readable form of the equation