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sounds great, none of the links "download : here" are working on this site. Is it still available?
I've written an App. myself. Its in C# 2019 and is downloadable from CodeProject https://www.codeproject.com/Articles/72737/Latin-Textbook-and-Look-up-Table-in-C
it has a full Cassell's dictionary that you can edit and insert new words to. Includes macrons in the WorkBook mode and has a Look-Up Table search words like Whittaker except provides a full definition and all conjugation/declensions. Beautiful, easy-to-use UI. Library resources of over 1500 ancient Latin texts, all searchable. Content search (search for words in the definitions of the Cassell's dictionary) and much much more.
A little work to get it set up. But Well worth the effort.