JDrupes (with domain jdrupes.org) is used as an umbrella for various Java projects that don’t have a domain of their own for the sources.
A build automation tool for Java projects. Maven was never an option for me because of its restrictive source code layout and gradle became too annoying with every upgrade breaking my builds. So I wrote my own.
A javadoc doclet that handles Markdown comments.
A non-blocking HTTP codec without any dependencies.
A Kubernetes operator for running virtual machines (notably Qemu VMs) as pods.
A Keycloak extension that uses a Moodle instance for authentication (and registration).