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Optimizing Access to Distributed Scientific Datasets

OPeNDAP is a free, open-source software that streamlines workflows & reduces costs for researchers, data managers & data providers.

SEE HOW IT WORKS
DOWNLOAD THE SERVER
OPeNDAP Community Forum
Take the OPeNDAP User Survey!

Photo by NASA

Did you know? OPeNDAP is also a 501(c)(3) nonprofit corporation with the mission to Democratize Data Access.

GET INVOLVED

New to OPeNDAP? Start here.

Learn How to Get Started with OPeNDAP

Check out our library of helpful resources including quickstart guides, user-created video tutorials, and more.

VIEW THE GUIDES

Contribute to the OPeNDAP Community

Share your insights with fellow users, attend our events, or contribute to our open-source code.

GET INVOLVED

Work with the OPeNDAP Team

Have some unique data needs? The OPeNDAP team is always open to collaborations on research proposals and contracts.

WORK WITH US

WHAT IS OPeNDAP?

OPeNDAP enables scientists to share data more easily over the internet.

OPeNDAP refers to:

  • The nonprofit corporation Open-source Project for a Network Data Access Protocol, Inc.
  • Open-source software to realize a Web-based data access protocol (or “DAP”), including:
    • Server software deployed by NASA and hundreds of otherdata providers
    • Client software employed for data retrieval in data analysis apps (e.g. those utilizing NetCDF) and bespoke programs in many languages (e.g. Python)
ABOUT THE SOFTWARE
ABOUT THE TEAM

BENEFITS OF OPeNDAP

Why Use OPeNDAP?

Retrieve Specific Subsets of Data

Access only the data points you need, eliminating the prohibitive time and cost of downloading full datasets.

Multiple File Formats

OPeNDAP “translates” data so that you can access data originally stored in a wide variety of file formats.

Multiple Data Types

OPeNDAP supports many types of data analyzed in scientific inquiry including gridded data, time series, and more.

Integration with Preferred Tools

Data files served through OPeNDAP can be accessed and read by commonly used tools including NetCDF, Python libraries, MATLAB, ArcGIS, and Panoply.

Extensibility & Customization

Have a unique distributed data need? Build on our open-source code yourself, or work with our team to create a custom server application.

FOR DATA ACCESS
FOR DATA MANAGERS
FOR DATA PROVIDERS
FOR DEVELOPERS

CLIENTS & FUNDERS

OPeNDAP Supporters

The following institutions have provided (and some continue to provide) financial support to OPeNDAP.

VIEW ALL SUPPORTERS
OPeNDAP nebula

Open Data Access Accelerates Discovery

30+

years

of experience in open data access frameworks
14+

data handlers

broad data format compatibility
10+

access patterns

broad adoption from distinct client APIs.
10+

petabytes

of data accessed through OPeNDAP’s framework

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