Holos Social#HolosSocial should not take too much space on your device. First, it has automatic cleaning features that you can tailor to your needs. It also uses bloom filters that automatically remove unwanted activities from the relay. On my own server, almost 14k posts take only 225 MB, less than a few photos.
GNU social JP is a social network, courtesy of GNU social JP管理人. It runs on GNU social, version 2.0.2-dev, available under the GNU Affero General Public License.
All GNU social JP content and data are available under the Creative Commons Attribution 3.0 license.