Observed arrival · 2026-09-05

Mappo puts a planet in your homepage

mappojs.com Observed source

Editorial interest 84/100 Selection signal · not a rating of the site

A lightweight JavaScript mapping library that renders globes, flat maps, city pins, arcs, choropleths, and other worlds as a custom HTML element.

Landing page captured for the 2026-09-05 issue.

Field notes

Mappo uses a custom `<mappo-world>` element to place geographic or planetary visualizations directly in a page, with no build step, framework, or bundler. The stated core is 22.2 KB gzipped and includes Earth’s land plus 160 named cities; optional Moon and Mars datasets are listed separately at 9.5 KB and 6.9 KB. The examples span flat maps, city arcs, country shading, sun-position night fields, and satellite tracking.

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✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

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