KDE Plasma 5 and Extras on pangea.pub:

kci.pangea.pub - Kubuntu CI Jenkins Package Builder
Kubuntu CI ISO Images

dci.pangea.pub - Debian CI Jenkins Package Builder
http://dci.pangea.pub/plasma/debian/ - Debian CI Plasma Packages
Debian CI ISO Images
To add plasma package repository:
sudo add-apt-repository http://pangea-data-lax-dci.s3.amazonaws.com/dci/plasma/debian

Plasmazilla (Mozilla Plasma-Support)

Calamares for Debian

Calamares Installer

http://ci.calamares.io/ - Calamares CI

Maui Desktop on pangea.pub:

http://dci.pangea.pub/job/maui/view/All/ - Maui Desktop for Debian CI

Arch Blueshell Repository

arch.pangea.pub - Some Arch Binary Packages

Netrunner Snapshot Repository

deb.netrunner.com