Which Git commit stats are easy to pull

Previously I have enjoyed TortoiseSvn's ability to generate simple commit stats for a given SVN repository. I wonder what is available in Git and am particularly interested in :

• Number of commits per user
• Number of lines changed per user
• activity over time (for instance aggregated weekly changes)

Any ideas?

Actually, git already has a command for this:

git shortlog

in your case, it sounds like you're interested in this form:

git shortlog -sne

See the --help for various options.

You may also be interested in the GitStats project. They have a few examples, including the stats for the Git project. From the GitStat main page:

Here is a list of some statistics generated currently:

• General statistics: total files, lines, commits, authors.
• Activity: commits by hour of day, day of week, hour of week, month of year, year and month, and year.
• Authors: list of authors (name, commits (%), first commit date, last commit date, age), author of month, author of year.
• Files: file count by date, extensions
• Lines: Lines of Code by date