A lot of the digital humanities work that really engages with free software is done by librarians or IT people rather than the principal investigators.
I was on a panel at last year's Libre Planet on Free Software in Academia that you might find interesting: I led a panel at LP2018 you may be interested in: https://media.libreplanet.org/u/libreplanet/m/free-software-in-academia/
Bobinas P4G is a social network. It runs on GNU social, version 2.0.1-beta0, available under the GNU Affero General Public License.
All Bobinas P4G content and data are available under the Creative Commons Attribution 3.0 license.