US amateur radio callsign lookup - licence class, status, grant and expiry dates, licensee name and grid square from the FCC database

Run a public GitHub repo's test, lint or build script in a disposable microVM and return structured logs and the commit

Homebrew cask info - macOS app version, download URL, sha256, homepage, auto-update flag and brew install --cask command

UK postcode lookup - latitude, longitude, ward, district, constituency, region and LSOA for any full UK postcode from Ordnance Survey open data

OEE calculator from availability, performance and quality percentages

SaaS unit economics - LTV, LTV:CAC and CAC payback months from ARPA, margin, churn and CAC

Video pixel count calculator - total pixels, megapixels and aspect ratio

Concrete volume estimate for a rectangular pour with waste allowance - cubic meters and liters

USGS river gauge reading - latest streamflow, gage height and water temperature for a USGS site number with 2-hour change

Tile quantity estimator from area, tile size and waste allowance

Fundraising dilution calculator - post-money valuation and investor and holder ownership after the round

Steam game details by app id - current price and discount, live concurrent player count, Metacritic score, genres, developer, release date and platforms

Domain registration facts via RDAP - registrar, creation, expiry and last-change dates, domain age, status codes, nameservers and DNSSEC for any domain

NOAA NDBC buoy observations - wind, gust, wave height and period, pressure and 3-hour trend, air and water temperature and 24-hour extremes

Startup runway calculator from cash, burn, revenue and growth - runway months and ending balance

Arch Linux package info across the official repos and the AUR - version, repo, size, dependencies, out-of-date flag, AUR votes and popularity

CPAN Perl distribution lookup - latest version, abstract, author, licence, runtime dependencies, downstream dependents and open issues from MetaCPAN

Upcoming passenger train departures at any Finnish station - train, destination, scheduled and estimated time, delay minutes, track and cancellations

Indian bank branch details from an IFSC code - bank, branch, address, city, state, MICR, SWIFT, and NEFT, RTGS, IMPS and UPI support

CRAN R package lookup - latest version, title, description, licence, maintainer, imports, depends and suggests, release date from crandb