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      <div class="breadcrumb"><a href="/">Home</a> » <a href="/licenses">Licenses</a></div>

      <h1 property="dc:title">HDF5 License</h1>
      <div style="display:none;"><code property="spdx:deprecated">false</code></div>
      <h2>Full name</h2>
          <p style="margin-left: 20px;"><code property="spdx:name">HDF5 License</code></p>

      <h2>Short identifier</h2>
          <p style="margin-left: 20px;"><code property="spdx:licenseId">HDF5</code></p>

      <h2>Other web pages for this license</h2>
          <div style="margin-left: 20px;">
            <ul>
             <li>
               <a href="https://github.com/HDFGroup/hdf5/?tab=License-1-ov-file#readme" rel="rdfs:seeAlso" isValid=true isLive=true isWayBackLink=false match=false timestamp=2025-07-01T14:54:20Z>https://github.com/HDFGroup/hdf5/?tab&#61;License-1-ov-file#readme</a>
               <!--Tentative way of displaying information <p>isValid: true, isLive: true, isWayBackLink: false, match: false, timestamp: 2025-07-01T14:54:20Z</p> -->
             </li>
           </ul>
          </div>

      <div property="spdx:isOsiApproved" style="display: none;">false</div>

      <h2 id="notes">Notes</h2>
          <p style="margin-left: 20px;">None</p>

      <h2 id="licenseText">Text</h2>
      
      <blockquote cite="https://spdx.github.io/spdx-spec/v2.3/license-matching-guidelines-and-templates/">
          <div style="border: 2px solid grey; padding: 8px">
		      Text in italicized blue is omittable (see <a href="https://spdx.github.io/spdx-spec/v2.3/license-matching-guidelines-and-templates/#b35-guideline-omittable-text">Matching Guidelines B.3.5</a>).
		      License or exception text will match to the text for the specified identifier if it either includes or excludes this omittable text.
			  <br/>
			  <br/>
			  Text in red is replaceable (see <a href="https://spdx.github.io/spdx-spec/v2.3/license-matching-guidelines-and-templates/#b34-guideline-replaceable-text">Matching Guidelines B.3.4</a>).
			  License or exception text will match to the text for the specified identifier if it includes a permitted variant of this replaceable text.
			  The permitted variants can be found in the corresponding regular expression as shown in title text visible by hovering over the red text.
	      </div>
	  </blockquote>

      <div property="spdx:licenseText" class="license-text">
      
         <var class="optional-license-text"> 
            Copyright Notice and License Terms for HDF5 (Hierarchical Data Format 5) Software Library and Utilities<br />

            -----------------------------------------------------------------------------
         </var>
         <div class="replaceable-license-text"><span title="can be replaced with the pattern .{0,5000}"> 
            <p>
               HDF5 (Hierarchical Data Format 5) Software Library
               and Utilities Copyright 2006 by The HDF Group.
            </p>

            <p>
               NCSA HDF5 (Hierarchical Data Format 5) Software
               Library and Utilities Copyright 1998-2006 by The
               Board of Trustees of the University of Illinois.
            </p>

            <p>
               All rights reserved.
            </p>

         </span></div>
         <p>
            Redistribution and use in source and binary forms, with or without
            modification, are permitted for any purpose (including commercial
            purposes) provided that the following conditions are met:
         </p>

<ul style="list-style:none">
            
<li>
               <var class="replaceable-license-text"><span title="can be replaced with the pattern .{0,20}"> 1.</span></var>
               Redistributions of source code must retain the above copyright
               notice, this list of conditions, and the following disclaimer.
            </li>
            
<li>
               <var class="replaceable-license-text"><span title="can be replaced with the pattern .{0,20}"> 2.</span></var>
               Redistributions in binary form must reproduce the
               above copyright notice, this list of conditions,
               and the following disclaimer in the documentation
               and/or materials provided with the distribution.
            </li>
            
<li>
               <var class="replaceable-license-text"><span title="can be replaced with the pattern .{0,20}"> 3.</span></var>
               Neither the name of The HDF Group, the name of the
               University, nor the name of any Contributor may be used
               to endorse or promote products derived from this software
               without specific prior written permission from The HDF
               Group, the University, or the Contributor, respectively.
            </li>
         
</ul>
         <p>
            DISCLAIMER: THIS SOFTWARE IS PROVIDED BY THE HDF GROUP AND THE
            CONTRIBUTORS &quot;AS IS&quot; WITH NO WARRANTY OF ANY KIND, EITHER EXPRESSED
            OR IMPLIED. IN NO EVENT SHALL THE HDF GROUP OR THE CONTRIBUTORS BE
            LIABLE FOR ANY DAMAGES SUFFERED BY THE USERS ARISING OUT OF THE USE
            OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
         </p>

         <p>
            You are under no obligation whatsoever to provide any bug
            fixes, patches, or upgrades to the features, functionality
            or performance of the source code (&quot;Enhancements&quot;) to anyone;
            however, if you choose to make your Enhancements available
            either publicly, or directly to The HDF Group, without imposing
            a separate written license agreement for such Enhancements,
            then you hereby grant the following license: a non-exclusive,
            royalty-free perpetual license to install, use, modify,
            prepare derivative works, incorporate into other computer
            software, distribute, and sublicense such enhancements or
            derivative works thereof, in binary and source code form.
         </p>

         <p>
            -----------------------------------------------------------------------------
         </p>

         <p>
            -----------------------------------------------------------------------------
         </p>

         <p>
            Contributors: National Center for Supercomputing Applications (NCSA)
            at the University of Illinois, Fortner Software, Unidata Program
            Center (netCDF), The Independent JPEG Group (JPEG), Jean-loup Gailly
            and Mark Adler (gzip), and Digital Equipment Corporation (DEC).
         </p>

         <p>
            -----------------------------------------------------------------------------
         </p>

         <p>
            Portions of HDF5 were developed with support from the Lawrence
            Berkeley National Laboratory (LBNL) and the United States
            Department of Energy under Prime Contract No. DE-AC02-05CH11231.
         </p>

         <p>
            -----------------------------------------------------------------------------
         </p>

         <p>
            Portions of HDF5 were developed with support from Lawrence
            Livermore National Laboratory and the United States Department
            of Energy under Prime Contract No. DE-AC52-07NA27344.
         </p>

         <p>
            -----------------------------------------------------------------------------
         </p>

         <p>
            Portions of HDF5 were developed with support from the University
            of California, Lawrence Livermore National Laboratory (UC
            LLNL). The following statement applies to those portions of the
            product and must be retained in any redistribution of source
            code, binaries, documentation, and/or accompanying materials:
         </p>

         <p>
            This work was partially produced at the University of
            California, Lawrence Livermore National Laboratory (UC LLNL)
            under contract no. W-7405-ENG-48 (Contract 48) between the U.S.
            Department of Energy (DOE) and The Regents of the University
            of California (University) for the operation of UC LLNL.
         </p>

         <p>
            DISCLAIMER: THIS WORK WAS PREPARED AS AN ACCOUNT OF WORK SPONSORED
            BY AN AGENCY OF THE UNITED STATES GOVERNMENT. NEITHER THE UNITED
            STATES GOVERNMENT NOR THE UNIVERSITY OF CALIFORNIA NOR ANY OF
            THEIR EMPLOYEES, MAKES ANY WARRANTY, EXPRESS OR IMPLIED, OR ASSUMES
            ANY LIABILITY OR RESPONSIBILITY FOR THE ACCURACY, COMPLETENESS,
            OR USEFULNESS OF ANY INFORMATION, APPARATUS, PRODUCT, OR PROCESS
            DISCLOSED, OR REPRESENTS THAT ITS USE WOULD NOT INFRINGE PRIVATELY-
            OWNED RIGHTS. REFERENCE HEREIN TO ANY SPECIFIC COMMERCIAL PRODUCTS,
            PROCESS, OR SERVICE BY TRADE NAME, TRADEMARK, MANUFACTURER, OR
            OTHERWISE, DOES NOT NECESSARILY CONSTITUTE OR IMPLY ITS ENDORSEMENT,
            RECOMMENDATION, OR FAVORING BY THE UNITED STATES GOVERNMENT OR
            THE UNIVERSITY OF CALIFORNIA. THE VIEWS AND OPINIONS OF AUTHORS
            EXPRESSED HEREIN DO NOT NECESSARILY STATE OR REFLECT THOSE OF
            THE UNITED STATES GOVERNMENT OR THE UNIVERSITY OF CALIFORNIA, AND
            SHALL NOT BE USED FOR ADVERTISING OR PRODUCT ENDORSEMENT PURPOSES.
         </p>

         <p>
            -----------------------------------------------------------------------------
         </p>

      
      </div>

      <h2  id="licenseHeader">Standard License Header</h2>
      <div property="spdx:standardLicenseHeader" class="license-text">
        <p style="font-style: italic">There is no standard license header for the license</p>
        
      </div>
      <div property="spdx:standardLicenseTemplate" style="display: none;">
      &lt;&lt;beginOptional&gt;&gt;Copyright Notice and License Terms for HDF5 (Hierarchical Data Format 5) Software Library and Utilities&#10;-----------------------------------------------------------------------------&lt;&lt;endOptional&gt;&gt; &lt;&lt;var;name&#61;&quot;copyright&quot;;original&#61;&quot;HDF5 (Hierarchical Data Format 5) Software Library and Utilities Copyright 2006 by The HDF Group.   NCSA HDF5 (Hierarchical Data Format 5) Software Library and Utilities Copyright 1998-2006 by The Board of Trustees of the University of Illinois.   All rights reserved.  &quot;;match&#61;&quot;.{0,5000}&quot;&gt;&gt;&#10;Redistribution and use in source and binary forms, with or without modification, are permitted for any purpose (including commercial purposes) provided that the following conditions are met:&#10;&#10;   &lt;&lt;var;name&#61;&quot;bullet&quot;;original&#61;&quot;1.&quot;;match&#61;&quot;.{0,20}&quot;&gt;&gt; Redistributions of source code must retain the above copyright notice, this list of conditions, and the following disclaimer.&#10;   &lt;&lt;var;name&#61;&quot;bullet&quot;;original&#61;&quot;2.&quot;;match&#61;&quot;.{0,20}&quot;&gt;&gt; Redistributions in binary form must reproduce the above copyright notice, this list of conditions, and the following disclaimer in the documentation and/or materials provided with the distribution.&#10;   &lt;&lt;var;name&#61;&quot;bullet&quot;;original&#61;&quot;3.&quot;;match&#61;&quot;.{0,20}&quot;&gt;&gt; Neither the name of The HDF Group, the name of the University, nor the name of any Contributor may be used to endorse or promote products derived from this software without specific prior written permission from The HDF Group, the University, or the Contributor, respectively.&#10;DISCLAIMER: THIS SOFTWARE IS PROVIDED BY THE HDF GROUP AND THE CONTRIBUTORS &quot;AS IS&quot; WITH NO WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED. IN NO EVENT SHALL THE HDF GROUP OR THE CONTRIBUTORS BE LIABLE FOR ANY DAMAGES SUFFERED BY THE USERS ARISING OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.&#10;&#10;You are under no obligation whatsoever to provide any bug fixes, patches, or upgrades to the features, functionality or performance of the source code (&quot;Enhancements&quot;) to anyone; however, if you choose to make your Enhancements available either publicly, or directly to The HDF Group, without imposing a separate written license agreement for such Enhancements, then you hereby grant the following license: a non-exclusive, royalty-free perpetual license to install, use, modify, prepare derivative works, incorporate into other computer software, distribute, and sublicense such enhancements or derivative works thereof, in binary and source code form.&#10;&#10;-----------------------------------------------------------------------------&#10;&#10;-----------------------------------------------------------------------------&#10;&#10;Contributors: National Center for Supercomputing Applications (NCSA) at the University of Illinois, Fortner Software, Unidata Program Center (netCDF), The Independent JPEG Group (JPEG), Jean-loup Gailly and Mark Adler (gzip), and Digital Equipment Corporation (DEC).&#10;&#10;-----------------------------------------------------------------------------&#10;&#10;Portions of HDF5 were developed with support from the Lawrence Berkeley National Laboratory (LBNL) and the United States Department of Energy under Prime Contract No. DE-AC02-05CH11231.&#10;&#10;-----------------------------------------------------------------------------&#10;&#10;Portions of HDF5 were developed with support from Lawrence Livermore National Laboratory and the United States Department of Energy under Prime Contract No. DE-AC52-07NA27344.&#10;&#10;-----------------------------------------------------------------------------&#10;&#10;Portions of HDF5 were developed with support from the University of California, Lawrence Livermore National Laboratory (UC LLNL). The following statement applies to those portions of the product and must be retained in any redistribution of source code, binaries, documentation, and/or accompanying materials:&#10;&#10;This work was partially produced at the University of California, Lawrence Livermore National Laboratory (UC LLNL) under contract no. W-7405-ENG-48 (Contract 48) between the U.S. Department of Energy (DOE) and The Regents of the University of California (University) for the operation of UC LLNL.&#10;&#10;DISCLAIMER: THIS WORK WAS PREPARED AS AN ACCOUNT OF WORK SPONSORED BY AN AGENCY OF THE UNITED STATES GOVERNMENT. NEITHER THE UNITED STATES GOVERNMENT NOR THE UNIVERSITY OF CALIFORNIA NOR ANY OF THEIR EMPLOYEES, MAKES ANY WARRANTY, EXPRESS OR IMPLIED, OR ASSUMES ANY LIABILITY OR RESPONSIBILITY FOR THE ACCURACY, COMPLETENESS, OR USEFULNESS OF ANY INFORMATION, APPARATUS, PRODUCT, OR PROCESS DISCLOSED, OR REPRESENTS THAT ITS USE WOULD NOT INFRINGE PRIVATELY- OWNED RIGHTS. REFERENCE HEREIN TO ANY SPECIFIC COMMERCIAL PRODUCTS, PROCESS, OR SERVICE BY TRADE NAME, TRADEMARK, MANUFACTURER, OR OTHERWISE, DOES NOT NECESSARILY CONSTITUTE OR IMPLY ITS ENDORSEMENT, RECOMMENDATION, OR FAVORING BY THE UNITED STATES GOVERNMENT OR THE UNIVERSITY OF CALIFORNIA. THE VIEWS AND OPINIONS OF AUTHORS EXPRESSED HEREIN DO NOT NECESSARILY STATE OR REFLECT THOSE OF THE UNITED STATES GOVERNMENT OR THE UNIVERSITY OF CALIFORNIA, AND SHALL NOT BE USED FOR ADVERTISING OR PRODUCT ENDORSEMENT PURPOSES.&#10;&#10;-----------------------------------------------------------------------------&#10;&#10;
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