Opensource.com - https://opensource.com/article/18/3/how-communities-are-evolving
How do we traditionally think about community health and vibrancy?
We might quickly zero in on metrics related primarily to code contributions: How many companies are contributing? How many individuals? How many lines of code? Collectively, these speak to both the level of development activity and the breadth of the contributor base. The former speaks to whether the project continues to be enhanced and expanded; the latter to whether it has attracted a diverse group of developers or is controlled primarily by a single organization.