Look at Blender and MediaWiki (the software running Wikipedia). They’re both FOSS and are developed and maintained by volunteers, backed by the end users. They’ve become such a big part of people’s lives, both professionally and privately, that they’ve become the mainstream choice.
I used wefwef / Voyager in the beginning, but I found that it crashed/reset too often for my liking. I’m now using Mlem which I’m pretty satisfied with.