FediTips has moved!OwnCast and PeerTube are free open software made by hardworking volunteers who depend on donations to carry out the work on the platforms.
All I can suggest is trying to support them with code or donations, and if there's a specific problem to let them know so they can fix it.
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.