A few of us met to discuss offline roadmaps and challenges today, and noting that no user gropu exists [and that other overviews of offline projects on Meta are a bit out of date] we started a user group. This is a very low-overhead group to provide a name for the network of all offline projects.
Please add links to your own active projects from this page.
https://meta.wikimedia.org/wiki/Offline_wiki_user_group
SJ