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- Number of contributing companies
- Number of overall contributors (all types of contributions)
- Mailing list participation: number of messages and diversity of participants (not simply the same voices all the time)
- Chat tool participation: number of messages and diversity of participants (not simply the same voices all the time)
- JIRA participation (bugs & blueprints): diversity of participants (not simply the same voices all the time)
- Gerrit review participation: diversity of participants (not simply the same voices all the time)
- Quality of participation: pull requests/gerrit changes accepted/merged vs submitted, average time for a change to be reviewed and submitted (proposals from all voices are considered and have a good experience), average time for an issue to receive a reply, issues opened vs closed (all voices feel they can contribute to the community).