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.

Open, cohort-relative momentum tracking for accelerator startups using auditable public signals. Live product: cohortwatch.dev.

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

An open-source AI platform that maps the evolution of scientific ideas, publications, and patents. Track breakthroughs, visualize research lineages, and give full attribution to every contributor—researchers, institutions, and corporations alike. Explore the global tree of knowledge, discover connections across disciplines, and see the past, present, and future of innovation in one interactive platform. https://roxanneardary.com/ideasphere/

SignalTruth is an open-source, AGPL 3.0+ commercial real estate intelligence system that transforms fragmented public records into a structured, confidence-scored property graph. It integrates ownership history, market data, legal frameworks, and data completeness analysis into a unified, event-driven intelligence layer. Built for transparency and auditability, SignalTruth provides traceable, source-backed insights into real estate assets, their ownership structures, and regulatory context. https://roxanneardary.com/signaltruth

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

ComparEdge open profile: verified software pricing, MCP servers, open dataset

ComparEdge open pricing dataset: hand-verified software and AI pricing as bands and tiers (CC BY 4.0)

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

Diário da República Electrónico - Versão do Cidadão

Scans every federal contract above $1M from USASpending.gov bulk data for one pattern: recipients with no prior federal contract history landing awards of $25M+ (or $10M+ on sole-source and single-offer contracts). A structural filter excludes ~1,600 verified entity types where no prior history is expected. Flags publish monthly at contractwatch.org. Python, Cloudflare Pages, MIT licensed. No agency affiliation.

34 free CC-BY financial and macro time series mirrored from FRED, BLS, Freddie Mac, and Treasury. Companion to calcfi.app calculators. Permanent DOIs on Figshare, Zenodo, OSF, Kaggle, Mendeley.

Download, filter, and aggregate NHTSA FARS fatal-crash data with zero non-stdlib dependencies. Companion to the Vision Zero Report Card.

Vision Zero Report Card — 7 years of NHTSA FARS truck-involved fatalities across 19 US cities. Reproducible Python pipeline + filtered dataset under CC BY 4.0.

Source code of the gamified data collection web app JeuDeGrosMots : https://jeu-de-gros-mots.short.gy/

DropThe -- Data utility media network. 1.9M entities, 3.5M connections. Movies, series, people, companies, crypto, cities. https://dropthe.org

Facil.guide - Guides pratiques en francais. Simplifier le quotidien avec des guides clairs et actionables. https://facil.guide

CoffeeTrove.com - The Golden Pages of Coffee. 440K+ cafes scored, 5,200+ roasters mapped, 14 free brewing tools. https://coffeetrove.com

DropThe.org - Data utility platform with 2M+ verified entities and 45 free tools. Country Comparison, Streaming Finder, Crypto Profit Calculator, and more. https://dropthe.org