Since 2005, the Free Software Foundation (FSF) has been maintaining a list of High Priority Projects (HPP), "a relatively small number of projects of great strategic importance to the goal of freedom for all computer users." In 2016, the HPP committee recommended extensive updates to this list. There is currently an open call for submissions, closing on January 8, 2021.
This is a companion discussion topic for the original entry at https://blog.snowdrift.coop/2021-high-priority-free-software-project-list/