# Welcome to OS Docs!

**Welcome to documentation for OS data products and services!** 

Here you'll find all the necessary documentation to easily get started using Ordnance Survey's data and services.

Dive into our comprehensive guides, tutorials, references and specifications to unlock the full potential and insight that our data can offer.  

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<table data-card-size="large" data-view="cards" data-full-width="true"><thead><tr><th></th><th></th><th data-hidden data-card-cover data-type="image">Cover image</th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><h3><strong>OS NGD Documentation</strong></h3></td><td>Learn how you can get started using OS National Geographic Database (OS NGD) data via OS Select+Build and the OS NGD APIs.</td><td data-object-fit="cover" data-alt="Example image of OS NGD Buildings data over an urban area."><a href="https://2102321119-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fe2YpKoZjDwthALjaqkCk%2Fuploads%2FKAEuXNY0qt3qWrf17EJ2%2Fngd-age-3000x2000.xcdb1e7e4.webp?alt=media&#x26;token=a6fd1346-f64c-4bdc-a620-d920098c49d7">ngd-age-3000x2000.xcdb1e7e4.webp</a></td><td><a href="https://app.gitbook.com/o/-Mk8110m7oh2XpDlKGbT/s/0pZjHxkAvY7Mn6TqFBMD/">osngd</a></td></tr><tr><td><h3><strong>OS APIs Documentation</strong></h3></td><td>Explore API references, getting started guides and examples for developing with OS APIs.</td><td data-object-fit="cover" data-alt="Example image of one of the OS APIs over an urban area."><a href="https://2102321119-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fe2YpKoZjDwthALjaqkCk%2Fuploads%2FHheOwwRNrRVRd1OvjzOX%2Fosmm-highways-speeds-network-southampton.jpg?alt=media&#x26;token=313d437c-346d-41bb-a405-e516319db771">osmm-highways-speeds-network-southampton.jpg</a></td><td><a href="https://app.gitbook.com/o/-Mk8110m7oh2XpDlKGbT/s/oEzqrBzRGoJw7nQyLj1W/">OS APIs</a></td></tr><tr><td><h3><strong>OS Download Products' Documentation</strong> </h3></td><td>Discover documentation and guides for the OS Premium and OpenData Download products, such as OS Emergency Services Gazetteer (OS ESG), OS Multi-modal Routing Network (OS MRN), OS MasterMap Topography Layer, AddressBase Premium, OS VectorMap Local, OS MasterMap Imagery Layer, OS Open Zoomstack, and Boundary-Line.</td><td data-object-fit="cover" data-alt="Example image of OS MasterMap Topography Layer data over the Ordnance Survey Headquarters in Southampton, England."><a href="https://2102321119-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fe2YpKoZjDwthALjaqkCk%2Fuploads%2F3ffBwrfQNEYnuw7W0eg7%2FMasterMap-Topography-1.png?alt=media&#x26;token=ff6e427c-f665-4d4a-a702-346619c29638">MasterMap-Topography-1.png</a></td><td><a href="https://app.gitbook.com/o/-Mk8110m7oh2XpDlKGbT/s/cNpJpLP8RROUaWVQo5ea/">OS Downloads</a></td></tr><tr><td><h3><strong>More than Maps</strong></h3></td><td>A one-stop shop for all your technical geospatial support. Access a range of information via an easy-to-use site that includes tutorials and demonstrators</td><td data-object-fit="cover" data-alt="Satellite image over London, England."><a href="https://2102321119-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fe2YpKoZjDwthALjaqkCk%2Fuploads%2FQPKgURWI8D8s6hW1qc6T%2FData-London-Galaxy-Map-1-2017.jpg?alt=media&#x26;token=36b81f09-566a-44ca-bbef-b7b1378969a5">Data-London-Galaxy-Map-1-2017.jpg</a></td><td><a href="https://docs.os.uk/more-than-maps">https://docs.os.uk/more-than-maps</a></td></tr></tbody></table>

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## Help and additional resources

Discover more resources that can help you build with OS data and services:

<table data-view="cards" data-full-width="true"><thead><tr><th></th><th></th><th data-hidden data-card-cover data-type="files"></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><h3><span data-gb-custom-inline data-tag="emoji" data-code="1f469-1f3eb">👩‍🏫</span> <strong>OS Data Hub support</strong></h3></td><td>Help with setting up an account, using our products and contacting us.</td><td></td><td><a href="https://osdatahub.os.uk/support/faqs/account-and-apis">https://osdatahub.os.uk/support/faqs/account-and-apis</a></td></tr><tr><td><h3><span data-gb-custom-inline data-tag="emoji" data-code="2139">ℹ️</span> <strong>Customer</strong> <strong>support and resources</strong></h3></td><td>Product support, licensing guides, information on our data and help with your accounts.</td><td></td><td><a href="https://www.ordnancesurvey.co.uk/customers/support">https://www.ordnancesurvey.co.uk/customers/support</a></td></tr><tr><td><h3><span data-gb-custom-inline data-tag="emoji" data-code="1f50e">🔎</span> <strong>OS NGD Data Viewer</strong></h3></td><td>A free interactive demonstrator of OS National Geographic Database (OS NGD) data that lets you visualise product sample data online for three areas.</td><td></td><td><a href="https://experience.arcgis.com/experience/88055eb5644e4d7aac88479c3f3e0a42/">https://experience.arcgis.com/experience/88055eb5644e4d7aac88479c3f3e0a42/</a></td></tr><tr><td><h3><span data-gb-custom-inline data-tag="emoji" data-code="1f5fa">🗺️</span> <strong>OS MasterMap Product Viewer tool</strong></h3></td><td><p>A free interactive demonstrator of OS data that lets you visualise product sample data online for three areas.</p><p></p><p>Sample data for numerous products is available through the tool, including OS MasterMap Topography Layer, AddressBase Premium, OS Open Roads and OS Open Zoomstack, amongst others.</p></td><td></td><td><a href="https://experience.arcgis.com/experience/20981dabcb14402687dccb437a4a78fb/">https://experience.arcgis.com/experience/20981dabcb14402687dccb437a4a78fb/</a></td></tr><tr><td><h3><span data-gb-custom-inline data-tag="emoji" data-code="1f468-1f4bb">👨‍💻</span> <strong>OS on GitHub</strong></h3></td><td>View mapping projects and collaborate with other developers using OS data.</td><td></td><td><a href="https://github.com/OrdnanceSurvey">https://github.com/OrdnanceSurvey</a></td></tr><tr><td><h3><span data-gb-custom-inline data-tag="emoji" data-code="1f4cc">📌</span> <strong>OS Developer Blog</strong></h3></td><td>Demos showing you how to integrate OS Data Hub APIs into web applications.</td><td></td><td><a href="https://osdeveloper.medium.com/">https://osdeveloper.medium.com/</a></td></tr></tbody></table>