... I suggest another archetype for ReactOS that is absent from the list compiled by the authors of the Mozilla paper. I call it the Wagon Train. The goal is big. Progress appears slow but it is steady. The project has a specific goals and vision. Achievement of the project's goals depends on a small number of very technically skilled people, a larger portion of participants contribute to the project but only in small or peripheral ways, but most of the project community have relatively low commitment and engagement levels. ...
From https://reactos.org/forum/viewtopic.php?t=17147#p131182 :