Reference
6 free reference tools in the Everyday & Quick-Help Apps collection — every one runs in your browser with no signup and no uploads.
Guitar Tuning Reference
String-by-string note names and frequencies for common guitar tunings.
Zodiac Signs Reference
All 12 zodiac signs with dates, elements, qualities and ruling planets.
Currency Symbols Reference
Currency symbols with ISO codes, names and countries — searchable.
Planetary Data Reference
Diameter, mass, gravity, orbit and moons for every planet.
Greek Alphabet Reference
All 24 Greek letters with names, pronunciation and uses.
Metric Prefixes Reference
Every SI prefix from quetta to quecto, with powers of ten.