Description: "Planner is the GNOME project management tool. Its goal is to be an easy-to-use no-nonsense cross-platform project management application. Planner is a GTK+ application written in C and licensed under the GPLv2 or any later version. It can store its data in either xml files or in a postgresql database. Projects can also be printed to PDF or exported to HTML for easy viewing from any web browser."
At this stage calligra doesn't support KF5.
The conversion is in progress but needs to be properly released before I can look at landing it in the repo. It was said to be before years end.