O

open-data

Portable JSON catalogue of the Swiss Federal LCI database BAFU:2026 (11,947 activities with exchanges and GWP100). Also the public place to report and discuss findings about the BAFU/UVEK data itself — see docs/bafu_findings.md and the issue tracker.

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

First-party CC-BY-4.0 sample of the Live Tennis API historical archive: one ATP season (2015) of tour-level singles results. Full 1968-2022 archive via https://livetennisapi.com

FOSS presentation of public EFK campaign financing data for Swiss federal elections

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

Tennis point-by-point dataset (ATP/WTA/Challenger/ITF, 2023-) — free for academic research. Docs + loaders; data via Zenodo DOI 10.5281/zenodo.22048731

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

MCP server for Portuguese property taxes: IMT, stamp duty and IMI rates from the free flatin.pt API.

QGIS plugin: IMI rates of all 308 Portuguese municipalities as a styled layer, from the open flatin.pt dataset.

Plateforme européenne open source de contexte IA vérifié : prompts, garde-fous, jeux de données et évaluations, chacun avec sa source et sa conformité européenne. https://contextetech.com (miroir de github.com/contexte-tech/contextetech, AGPL-3.0).

Open-source European platform for verified AI context: prompts, guardrails, datasets and evals, each with its source and EU compliance. https://contextetech.com/en/ (mirror of github.com/contexte-tech/contextetech, AGPL-3.0)

Diário da República Electrónico - Versão do Cidadão

ImVisible AI Search Index Thailand — monthly open data (CC BY 4.0) on which websites AI assistants cite for Thai-market questions. Report & methodology: https://imvisible.tech/blog/ai-search-index

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

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

Guide multilingue non officiel du Mondial de roundnet 2026 (Parc du Tremblay, Champigny-sur-Marne, 2–6 septembre 2026). Cartographie interactive D3.js, horaires détaillés, formats et accès.

Ambientium is an open hardware specification for discovering, evaluating, and developing materials, devices, construction methods, and computational architectures capable of operating at ambient or near-ambient temperatures. It provides a modular, technology-neutral framework for research, simulation, fabrication, patent-aware design exploration, prototyping, and validation, serving as the physical hardware discovery layer for VigilQuantum. https://roxanneardary.com/ambientium/

Traffic and usage measurement for eclipsefan.org across the total solar eclipse of 12 August 2026 — 70.4 M requests in a day, from a 15 000/day baseline — sized for the eclipse of 2 August 2027. Ships the published aggregates and the dashboard that reads them: https://stats.eclipsefan.org

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

Open CPQ metrics and KPI dictionary with CSV, JSON, schemas and implementation guidance. Official GitLab mirror.

Primary repository: https://github.com/configure-to-win/cpq-metrics-kpi-dictionary

Resource page: https://configure.win/resources/cpq-metrics

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/