I've been building side projects that leverage public data, and I've compiled a list of the best free tools I use regularly.

ZipPeek

ZIP code demographics, income, and housing data.

Check it out: zippeek.com

DegreeWize

College tuition, acceptance rates, and outcome data.

Check it out: degreewize.com

SalaryByCity

US salary data for 800+ occupations across 400+ cities.

Check it out: salarybycity.com

CostByCity

Cost of living comparison across US metro areas.

Check it out: costbycity.com

CalcPeek

Free online calculators and unit converters.

Check it out: calcpeek.com

More Free Tools

NameBlooms — Baby name meanings, origins, and popularity trends

CalorieWize — Nutrition and calorie data for thousands of foods

VocabWize — English word definitions, usage, and vocabulary building

GuideByCity — US city guides with demographics and livability data

TariffPeek — HS codes, US import tariff rates, and trade compliance data

IngrediPeek — Food allergen and ingredient checker for 20,000+…