The source code is in the repository Flash-X/Flash-X
It is distributed under Apache 2.0 license. The repository is not public because we are required by our funders to maintain a list of users who obtain the code from the repository. Therefore you must be a GitHub user and become a collaborator of the repository to obtain the code from us. Please email flash-x@lists.cels.anl.gov with your github username to get access.
For more information about the code please visit our website https://flash-x.org