You can find us on our discord server.
We have fairly strict licenses on our projects, feel free to contact us for a different license for your usecase
I also host a maven for modded minecraft with focus on 1.7.10. https://maven.thorfusion.com/artifactory/central/ Several old mavens have gone offline over the years and this is to keep old artifacts available for others and provide as an backup. I even managed to gen an old backup of kcauldron's maven on it. kcauldron.thorfusion.com is the dedicated link.
