creating offline albums in Photos for Mac

While trying to work on a current album project, I learnt that Photos will stop supporting their current Album projects as of 30th September 2018.

I have been creating annual photo albums (and other special projects) for many years with iPhotos and Photos and have found it wonderful to work with especially as I need an offline option. I have previously created my photo books while kids are in hospital having treatment, while overseas (no data plans), or when I have downtime at home (we have terrible and limited internet and data service where I live and no wifi options in the living area).

Each year the photo books created are kept to the standard size of previous Apple Mac albums and they fit well in the bookshelf together.

The new photo extension apps (Mimeo & Wix), while appearing to suit most of my creative needs are useless to me as it appears they only work while online.

What are my options going forward for an offline application to create photo albums?