Bintray.com has served the Feel++ Debian packages for some time but the service was shut down beginning of May 2021. We have move the service to https://feelpp.jfrog.io and updated our procedure
For example for Ubuntu Focal 20.04, follow these steps to get the Feel++ core toolboxes and mor packages
echo "deb https://feelpp.jfrog.io/artifactory/ubuntu focal latest" | sudo tee -a /etc/apt/sources.list
wget -qO - https://feelpp.jfrog.io/artifactory/api/security/keypair/gpg-debian/public | sudo apt-key add -
apt update
Debian packages for focal and buster are automatically generated when new commits are done in the develop branch and then part of the latest distribution channel.
When a release is done, the master branch is updated and Debian packages for focal and buster are generated for the stable distribution channel.
Of course, Debian packages can be used in Windows 10 thanks to WSL and the installation of a subsystem like focal or buster.
More details are available here