My Open Source Documentation Stack

People say that open source documentation is important — a sentiment I share. Unfortunately, looking around the community, there are vast graveyards of open source projects with little to no documentation. Maybe they have a near-blank Read.me from project set-up automation and not much else. On the other hand, there are successful open-source projects that are also documented. Are there any successful open-source projects without documentation? It might be documentation that helps projects succeed.