Gyde is built on the work of open communities and open-source software. This page acknowledges the data sources and libraries we rely on, and the licenses under which their work is provided.
Open data sources
OpenStreetMap
Map data and points-of-interest geometry are derived in part from OpenStreetMap. OpenStreetMap data is © OpenStreetMap contributors and is available under the Open Database License (ODbL) 1.0. Individual map tiles and cartography may be licensed under CC BY-SA 2.0. Any database we produce that incorporates OSM data is a derived database under the ODbL.
Wikidata
Structured facts (such as place identifiers, categories, and relationships) are sourced from Wikidata. Wikidata content is released under the Creative Commons CC0 1.0 Universal public domain dedication.
Wikimedia Commons
Photographs and other media are sourced from Wikimedia Commons. Each file on Commons is published under its own license - commonly CC BY-SA 4.0, CC BY 4.0, or the public domain. We preserve and display the original author, source page, and license information for each image we use.
OpenTripMap
Some discovery and categorization data is sourced from OpenTripMap, which itself aggregates data from OpenStreetMap, Wikidata, and other open sources. Attribution flows through to the underlying source where applicable.
Austin landing page photographs
The Austin market-test landing pages use cropped mockup photographs from Wikimedia Commons:
- Driskill Hotel Exterior by Kenneth C. Zirkel, licensed under CC BY-SA 3.0.
- Paramount Theater - Austin, Texas - DSC08308.jpg by Daderot, dedicated under CC0 1.0.
- TexasStateCapitol-2010-01.JPG by LoneStarMike, licensed under CC BY 3.0.
OpenAI
The backend uses OpenAI services to (a) synthesize human-readable descriptions and narration scripts from structured evidence and (b) perform research queries that find candidate sources. Generated text is grounded in the evidence we collect from the sources above. Generated narration audio may be produced by an OpenAI text-to-speech model.
Google Places
Google Places is used as a discovery and validation aid only - to confirm that a place exists and to find its approximate location. We do not store Google's place names, descriptions, photos, reviews, or coordinates as canonical data, and we do not display Google-sourced content as ours.
OpenStreetMap Nominatim
Address-to-coordinate resolution uses Nominatim, which is based on OpenStreetMap data and subject to the ODbL.
Open-source libraries used in the mobile app
The Gyde iOS app is built with the libraries below. Each is provided by its respective authors under its own license; click through for full license text.
- React Native and React - MIT License, © Meta Platforms, Inc. and affiliates.
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Expo SDK (including
expo,expo-apple-authentication,expo-audio,expo-auth-session,expo-dev-client,expo-location,expo-secure-store,expo-status-bar,expo-web-browser) - MIT License, © 650 Industries, Inc. - react-native-maps - MIT License.
- @expo/vector-icons, which bundles the Material Design Icons set by Pictogrammers (Apache License 2.0) and other icon sets under their respective licenses.
- TypeScript - Apache License 2.0, © Microsoft Corporation.
Reporting issues with attributed content
If you believe content shown in the App is missing required attribution, violates a license, or should be removed, please contact drewb97@gmail.com and we will address the issue.