Silo source code is released under the BSD 3-clause license.

Two compression libraries, fpzip and hzip which are part of the release artifact and can be built-in to Silo, are not BSD licensed. As of version 4.12.0, whether a BSD licensed or LLNL legacy licensed version is built can be specified by the -DSILO_BUILD_FOR_BSD_LICENSE:BOOL CMake option.

For details, see the BSD_LICENSE_README file.

Date Version Sources Documentation
Nov 2025 4.12.0 Legacy+BSD Release notes / User Manual
Sep 2023 4.11.1 Legacy / BSD Release notes / User Manual
Sep 2022 4.11 Legacy / BSD Release notes
Feb 2016 4.10.2 Legacy / BSD See 4.10.1 Release notes
Feb 2016 4.10.1 Not available Release was DOA
Jul 2014 4.10 Legacy / BSD Release notes / User Manual
Jun 2013 4.9.1 Legacy / BSD Release notes
Mar 2012 4.9 Legacy / BSD Release notes
Aug 2010 4.8 Legacy / BSD Release notes / User Manual
Nov 2009 4.7.2 Legacy Release notes / User Manual
Nov 2009 4.7.1 Not available Release was DOA
Jan 2009 4.7 Legacy User Manual
Jul 2008 4.6.2 Legacy User Manual
Oct 2007 4.6.1 Legacy User Manual