Deletion of Tropy

Comment: I see multiple independent articles on it:  https://www.historians.org/publications-and-directories/perspectives-on-history/april-2018/research-clutter-a-new-app-helps-create-order-out-of-disorder,https://guides.library.cornell.edu/c.php?g=31776&p=4854522,https://www.chronicle.com/blogs/profhacker/tropy-a-tool-i-wish-i-had-when-writing-my-dissertation/65374.  Hence, meets 
Stance: keep
Cited policy: Wikipedia:Notability (WP:GNG)

Comment: I think the links provided by David Tornheim show that this tool meets 
Stance: keep
Cited policy: Wikipedia:Notability (WP:GNG)