You can install osmin on Linux. Som distros have it in their repos.
OpenStreetMap community
Everything #OpenStreetMap related is welcome: software releases, showing of your work, questions about how to tag something, as long as it has to do with OpenStreetMap or OpenStreetMap-related software.
OpenStreetMap is a map of the world, created by people like you and free to use under an open license.
Join OpenStreetMap and start mapping: https://www.openstreetmap.org/.
There are many communication channels about OSM, many organized around a certain country or region. Discover them on https://openstreetmap.community/
https://mapcomplete.org/ is an easy-to-use website to view, edit and add points (such as shops, restaurants and others)
https://learnosm.org/en/ has a lot of information for beginners too.
I’ll have a look at that, thanks!
On Linux gnome maps uses OSM
https://gitlab.gnome.org/GNOME/gnome-maps for standard maps
And https://apps.kde.org/ktrip/ for public transport on linux and android
I don't think Organic Maps supports public transport navigation yet, but since you mentioned it, just a note that OM is also available in beta for desktop.
They’ve got an option when routing for public transport but it just shows the walking route