There was a download of libSBML 5.10.2 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available.
We cannot guarantee that the program is safe to download as it will be downloaded from the developer's website. Before launching the program, check it with any free antivirus software. The software is categorized as Development Tools. The most popular versions of the tool are 5.8, 5.1 and 5.0. This free program was originally produced by Sarah Keating, Akiya Jouraku, Frank Bergmann.
From the developer:
LibSBML is a free, open-source programming library to help you read, write, manipulate, translate, and validate SBML files and data streams. It's not an application itself (though it does come with example programs), but rather a library you embed in your own applications.
You may want to check out more software, such as SBMLToolbox, which might be similar to libSBML.