This is Redmine plugin which exports issue list to XLSX format file.
In Redmine folder,
$ cd plugins
$ git clone https://github.com/two-pack/redmine_xlsx_format_issue_exporter.git redmine_xlsx_format_issue_exporter
$ cd ..
$ bundle install --without test
Finally restart Redmine.
This plugin extracts some code from csv export function in Redmine.
This plugin is released under the GPL v2 license. See LICENSE.txt for more information.
Copyright (C) 2014 Tatsuya Saito.