Too many to count... pretty much everyone acquired by Facebook or Google. One that I used until FB acquired them was Drop.io https://en.wikipedia.org/wiki/Lis

Too many to count... pretty much everyone acquired by Facebook or Google. One that I used until FB acquired them was Drop.io https://en.wikipedia.org/wiki/List_of_mergers_and_acquisitions_by_Meta_Platforms https://en.wikipedia.org/wiki/List_of_mergers_and_acquisitio... https://en.wikipedia.org/wiki/Lists_of_corporate_mergers_and_acquisitions https://en.wikipedia.org/wiki/Lists_of_corporate_mergers_and...