Could you give me examples of software or ecosystems intended for end-users that is
- developed by a community
- where no member of the community dominates the process
-under a F/OSS license
- is not a component like the linux kernel or a database like postgres, but a geniune application that end-users can conceptualize as "using"
- has measureable real-world use?

Only some linux distributions come to my mind, what am I missing?