Face recognition :

https://search4faces.com/ Good results but in russian & limited to russian social medias

https://betaface.com/demo.html can be used to search faces on wikipedia

Yed is a free graph editor https://www.yworks.com/products/yed/download#download

Quite useful for small diagrams but you can do very big diagrams too… But if I don't think it's designed for that because at some points it lacks options to make it more readable, as my diagram of the history of all historical events shows (work in progress, if you have a better tool…)