The goal of the History wiki is to be the "the ultimate History Source that anyone can edit." It has over 1,000 articles.

Interestingly it appears to have many edits by unregistered users and no active administrators.

Lightly active wiki
This wiki is active, but at a fairly "light" level.
The low level of activity or smaller size of this wiki may be because it's new. Or perhaps it's an older wiki that's been growing slowly over time. Either way, it could use additional contributors, would you like to help?