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OpenStreetMap ↗

Navigation, geolocation and geographical data

HTTPS: No

OpenStreetMap Editing API ↗

The OpenStreetMap editing interface for map objects and changesets.

OpenSubtitles ↗

Search and download subtitles for movies and TV shows

HTTPS: Yes · CORS: Yes

OpenSwissData ↗

Swiss customs tariff (TARES), FINMA register and warnings, NOGA/NACE/ISIC code crosswalks

OpenTiendas ↗

Official e-commerce API and webhooks

HTTPS: Yes

OpenUnfurl ↗

OpenUnfurl (Development): No-signup link unfurl API returning Open Graph, Twitter Card and oEmbed metadata

OpenUV ↗

Real-time UV Index Forecast

HTTPS: Yes

OpenUV - Global Real-Time UV Index Forecast API ↗

OpenAPI-specified web service (openuv.io, version v1): The missing minimalistic JSON real-time UV Index API for awesome Developers, Innovators and Smart Home Enthusiasts

OpenVan ↗

Fuel prices for 121 countries, food cost index & vanlife weather scores for RV travel

HTTPS: Yes · CORS: Yes

OpenVisionAPI ↗

Open source computer vision API based on open source models

HTTPS: Yes · CORS: Yes

OpenWeather ↗

A collection of weather products with different access plans.

OpenWeatherMap ↗

Weather

HTTPS: Yes

Openwhyd ↗

Download curated playlists of streaming tracks (YouTube, SoundCloud, etc...)

HTTPS: Yes · CORS: No

Opera - Lyrical and choreographic performances - Season 2023/2024 (EU Open Data · France) ↗

European open dataset/API (France): Lyrical and choreographic performances - 2023/2024 season. Contains opera and ballet performances of opera houses that are members of the Réunion des Opéras de France. Members of the Réunion des Opéras de France: https://www.rof.fr/ROF/membres-rof-officiel.aspx SPARQL request: https://sparql.capdataopera.fr Ontology: h

Operationele autolease, prijsindex modelprijzen 3e kwartaal 1997=100 (Overheid Open Data) ↗

Dutch public-sector open dataset and API ("Operationele autolease, prijsindex modelprijzen 3e kwartaal 1997=100") registered in the national data.overheid.nl catalog. Original Dutch description: Prijsindexcijfers, kwartaalmutaties, jaarmutaties en wegingscoëfficienten voortuig en bestemming 1997 - 2001, Kw I 1997 - Kw IV 2001 Gewijzigd op 25 augustus 2005. Verschijningsfrequentie: Stopgezet.

Opheffing van bedrijven en werkgelegenheid naar economische activiteit (Overheid Open Data) ↗

Dutch public-sector open dataset and API ("Opheffing van bedrijven en werkgelegenheid naar economische activiteit") registered in the national data.overheid.nl catalog. Original Dutch description: Opheffing van bedrijven en werkgelegenheid naar economische activiteit (SBI'93). 1993 - 1996 Gewijzigd op 01 juli 2005. Verschijningsfrequentie: Stopgezet.

ORB Intelligence ↗

Company lookup

HTTPS: Yes

Orbit (ai.buildwithorbit/orbit MCP Server) ↗

MCP server (ai.buildwithorbit/orbit v1.0.0): Turn any task into the right API calls: discover, evaluate, and integrate public APIs.

Orbit API ↗

OpenAPI-specified web service (orbit.love, version v1): Please see the complete Orbit API documentation at https://api.orbit.love/.

OrbitalWiki ↗

Catalog of 16,000+ satellites merging CelesTrak, GCAT, Wikidata; free tier included

HTTPS: Yes · CORS: Yes

Orca Scan ↗

Generate barcode images (QR, Code 128, EAN, Data Matrix and more) in SVG, PNG, JPG or PDF

HTTPS: Yes · CORS: Yes

ORCID Public API ↗

Persistent researcher identifiers (ORCID iDs), publication records, institutional affiliations and funding metadata via REST/XML/JSON.

Orders API (walmart.com) ↗

OpenAPI-specified service (walmart.com:order, version 3.0.1): Please make sure you use the correct version of the APIs for your use case. To find out the appropriate version, go to the API Docs drop down on the menu.

Organisations published on www.stad.gent (EU Open Data · Belgium) ↗

European open dataset/API (Belgium): Consult the organizations published on stad.gent website In addition to publishing on various web pages, we also publish these organisations as lined open data. The query with which we query this data is conducted on a daily basis. Need for a more targeted search For these searches we use the search language SPARQL. We

Organization Policy API — orgpolicy (googleapis.com) ↗

OpenAPI-specified service (googleapis.com:orgpolicy, version v2): The Org Policy API allows users to configure governance rules on their GCP resources across the Cloud Resource Hierarchy.

Organizational Units of the administrations based in Lazio (EU Open Data · Italy) ↗

European open dataset/API (Italy): It contains the references of the Organizational Units of the administrations based in Lazio. The dataset is related to those relating to "Administrations with offices in Lazio" [http://dati.lazio.it/catalog/dataset/administrations-with-headquarters-in-Lazio] and "Homogeneous Organizational Areas of Administrations wit

OrgHunter ↗

OpenAPI-specified web service (orghunter.com, version 1.0.0): Get the latest IRS data and most up to date charity information for your website or application

Orion Health ↗

Medical platform which allows the development of applications for different healthcare scenarios

HTTPS: Yes

Orizn Visa ↗

Visa requirements for 199 countries, 39K+ passport-destination pairs in 15 languages

HTTPS: Yes · CORS: Yes

Orthanc API (orthanc-server.com) ↗

OpenAPI-specified web service (orthanc-server.com, version 1.11.3): This is the full documentation of the REST API of Orthanc. This reference is automatically generated from the source code of Orthanc. A shorter cheat sheet is part of the Orthanc Book. An earlier, manually crafted version from August 2019, is still available, but is not up-to-date anymore (source).

Ortschaften der Kreisstadt Olpe (EU Open Data · Germany) ↗

European open dataset/API (Germany): Inhalt: * Geografische Lage der Ortschaften * GeoJSON im Standardkoordinatensystem WGS84 (EPSG:4326) Ressource eignet sich für Kartenanwendungen und Open Data Portale.

OS Config API — osconfig (googleapis.com) ↗

OpenAPI-specified service (googleapis.com:osconfig, version v1beta): OS management tools that can be used for patch management, patch compliance, and configuration management on VM instances.

OS Downloads API (UK Open Government Data) ↗

UK public-sector open dataset and API ("OS Downloads API") registered on data.gov.uk: The OS Downloads API is a service that lets users automate the discovery and download of OS OpenData. In doing so it improves the accessibility of the OS OpenData products. Using the OS Downloads API, you can: - Discover which OS OpenData is available. - Automate the download of OS OpenData. - Request various coverage

OS Features API (EU Open Data · United Kingdom) ↗

European open dataset/API (United Kingdom): Direct access to the most detailed geographic data for your analysis. Take full advantage of rich geometries and attributes to generate new insight. Benefit from current, detailed and accurate data to help you generate new location-based insight. OS Features API contains OS MasterMap Topography Layer, and much more. Bu

OS Features API (UK Open Government Data) ↗

UK public-sector open dataset and API ("OS Features API") registered on data.gov.uk: Direct access to the most detailed geographic data for your analysis. Take full advantage of rich geometries and attributes to generate new insight. Benefit from current, detailed and accurate data to help you generate new location-based insight. OS Features API contains OS MasterMap Topography Layer, and much more. Bu

OS Linked Identifiers API (UK Open Government Data) ↗

UK public-sector open dataset and API ("OS Linked Identifiers API") registered on data.gov.uk: The OS Linked Identifiers API allows you to access the valuable relationships between properties, streets and OS MasterMap identifiers (TOIDs). Benefit from the valuable relationship found in OS Premium products. Link together datasets that are using different identifiers; for example, linking a property address (UPRN)

OS Maps API (Restful ZXY) (EU Open Data · United Kingdom) ↗

European open dataset/API (United Kingdom): Accurate, up-to-date maps that offer the most convenient way to add detailed OS data to your application. Benefit from unrivalled levels of detail in your GIS, web or mobile app. OS Maps API contains OS MasterMap Topography Layer, 1:25 000 Scale Colour Raster and more data layers.

OS Maps API (Restful ZXY) (UK Open Government Data) ↗

UK public-sector open dataset and API ("OS Maps API (Restful ZXY)") registered on data.gov.uk: Accurate, up-to-date maps that offer the most convenient way to add detailed OS data to your application. Benefit from unrivalled levels of detail in your GIS, web or mobile app. OS Maps API contains OS MasterMap Topography Layer, 1:25 000 Scale Colour Raster and more data layers.

OS Maps API (WMTS) (UK Open Government Data) ↗

UK public-sector open dataset and API ("OS Maps API (WMTS)") registered on data.gov.uk: Accurate, up-to-date maps that offer the most convenient way to add detailed OS data to your application. Benefit from unrivalled levels of detail in your GIS, web or mobile app. OS Maps API contains OS MasterMap Topography Layer, 1:25 000 Scale Colour Raster and more data layers.

OS MasterMap Water Network Layer (UK Open Government Data) ↗

UK public-sector open dataset and API ("OS MasterMap Water Network Layer") registered on data.gov.uk: OS MasterMap Water Network Layer will become "end of life" on 31st March 2026. OS MasterMap Water Network Layer offers one of the world’s most detailed, heighted water networks – showing the flow and precise course of every river, stream, lake and canal in Great Britain. From aqueducts to tunnels, with annotations of f

OS Names API (EU Open Data · United Kingdom) ↗

European open dataset/API (United Kingdom): With OS Names API, you’ll have access to a straightforward, rapid lookup service: drilling down into the details we hold in our OS Open Names dataset. The API uses the OS Open Names dataset, a gazetteer or directory hosting detailed information about 2.5 million identifiable places in Great Britain including postcodes,

OS Names API (UK Open Government Data) ↗

UK public-sector open dataset and API ("OS Names API") registered on data.gov.uk: With OS Names API, you’ll have access to a straightforward, rapid lookup service: drilling down into the details we hold in our OS Open Names dataset. The API uses the OS Open Names dataset, a gazetteer or directory hosting detailed information about 2.5 million identifiable places in Great Britain including postcodes,

OS NGD API - Features (UK Open Government Data) ↗

UK public-sector open dataset and API ("OS NGD API - Features") registered on data.gov.uk: OS NGD API – Features gives you simple access to the OS National Geographic Database (OS NGD). Get started quickly and request the data you need, as and when you need it, using the latest in API standards (based on the OGC API – Features specification). This API is self-documenting and allows you to easily discover wha

OS NGD API – Tiles (EU Open Data · United Kingdom) ↗

European open dataset/API (United Kingdom): OS NGD API – Tiles offers you a vector tile service powered by the OS National Geographic Database (OS NGD). It provides a detailed and customisable basemap based on the latest OGC API – Tiles standard to help you create stunning and interactive web maps. It can be used with most web mapping libraries, including OpenLa

OS NGD API – Tiles (UK Open Government Data) ↗

UK public-sector open dataset and API ("OS NGD API – Tiles") registered on data.gov.uk: OS NGD API – Tiles offers you a vector tile service powered by the OS National Geographic Database (OS NGD). It provides a detailed and customisable basemap based on the latest OGC API – Tiles standard to help you create stunning and interactive web maps. It can be used with most web mapping libraries, including OpenLa

OS Open Linked Identifiers (UK Open Government Data) ↗

UK public-sector open dataset and API ("OS Open Linked Identifiers") registered on data.gov.uk: OS Open Linked Identifiers provides authoritative relationship between UPRNs, USRNs, TOIDs and meta data to enable reliable matching; for greater data connectivity. Authoritative relationships OS Open Linked Identifiers is a dataset containing the authoritative relationships between Unique Property Reference Numbers (U

OS Places API (EU Open Data · United Kingdom) ↗

European open dataset/API (United Kingdom): Find UK addresses instantly online and be confident you're getting the most up-to-date information with our address API. Perform accurate geocoding and reverse geocoding with our secure, scalable, and resilient address look-up web service. Search by postcode, UPRN, full or partial address and ensure you get the right a

OS Places API (UK Open Government Data) ↗

UK public-sector open dataset and API ("OS Places API") registered on data.gov.uk: Find UK addresses instantly online and be confident you're getting the most up-to-date information with our address API. Perform accurate geocoding and reverse geocoding with our secure, scalable, and resilient address look-up web service. Search by postcode, UPRN, full or partial address and ensure you get the right a

OS Vector Tile API (EU Open Data · United Kingdom) ↗

European open dataset/API (United Kingdom): Slick, quick vector maps for use as a customisable, contextual base, with a focus on web and mobile apps. Benefit from unrivalled levels of detail in your web or mobile app. OS Vector Tile API contains OS MasterMap Topography Layer including building heights. Integrate Ordnance Survey's up-to-date, detailed maps in you

OS Vector Tile API (UK Open Government Data) ↗

UK public-sector open dataset and API ("OS Vector Tile API") registered on data.gov.uk: Slick, quick vector maps for use as a customisable, contextual base, with a focus on web and mobile apps. Benefit from unrivalled levels of detail in your web or mobile app. OS Vector Tile API contains OS MasterMap Topography Layer including building heights. Integrate Ordnance Survey's up-to-date, detailed maps in you