Selection rule
SpecWhale prefers tools that run locally in the browser. Public APIs are used only when they add clear user value and can be used without paid keys for the intended feature.
Current public sources
- Nager.Date for public holidays.
- Browser Intl.DisplayNames and bundled ISO alpha-2 identifiers for country lookup.
- Open-Meteo for simple weather lookup.
Local browser capabilities
Many tools use Web Crypto, Canvas, Blob, File, URL, Intl, and standard JavaScript APIs so the site can stay fast and free on static hosting.