This is the CCSDS Functional Resource Editor project. It provides eclipse plugins to edit Functional Resources as available at SANA in eclipse: https://sanaregistry.org/r/functional_resources/
A github repository hosting an eclipse p2 update site is available here: https://github.com/esa/ccsds-css-frm-editor-p2
Use this URL as an eclipse update site to install and update the Functional Resource Editor Plugins in eclipse: https://esa.github.io/ccsds-css-frm-editor-p2/