Minimum Java runtime is Java 17.
APP4MC Platform 3.3.0 for Linux (64 Bit) - Zip-archive (410 MB)
APP4MC Platform 3.3.0 for OSX (64 Bit) - Zip-archive (407 MB)
APP4MC Platform 3.3.0 for Windows (64 Bit) - Zip-archive (404 MB)
direct link: https://download.eclipse.org/app4mc/updatesites/releases/3.3.0/
for offline installation: Zip-archive of APP4MC 3.3.0 p2 repository
For older versions please refer to: