O

open-data

Observatori independent de subvencions i contractes públics a Catalunya. 336.000 entitats, 19.5M registres, codi obert.

An open specification for recording animal communication with context — what triggered a signal, and what happened after it.

FOSS presentation of EFK campaign financing data for Swiss federal popular votes

FOSS landing and legal pages for the swatchdog Swiss open-data platform

Free, keyless REST API and MCP server for German public-infrastructure open data across 84+ cities. Official mirror of github.com/street1983nk/infranode.

Public CohortWatch interface for evidence-backed, cohort-relative startup momentum. Live at cohortwatch.dev.

Data from Tony Campbell's Map History (maphistory.info), preserved as versioned static JSON with a minimal Astro site for browsing.