List all contributions grouped by author name

git shortlog summarizes git log and groups by author

If no parameters are given, a list of all commits made per committer will be shown in chronological order.

$ git shortlog
Committer 1 (<number_of_commits>):
    Commit Message 1
    Commit Message 2
    ...
Committer 2 (<number_of_commits>):
    Commit Message 1
    Commit Message 2
    ...

To see the number of commits and suppress the commit description, use the summary option:

-s

--summary

$ git shortlog -s
<number_of_commits> Committer 1
<number_of_commits> Committer 2

To sort the output by number of commits instead of alphabetically by committer name, pass in the numbered option:

-n

--numbered

To add the email of a committer, add the email option:

-e

--email

A custom format option can also be provided if you want to display information other than the commit subject:

--format

This can be any string accepted by the --format option of git log.

See Colorizing Logs above for more information on this.