Introducing a new data source: Launchpad data. In this collection, Launchpad has about 19k projects in it and about 34k developers.

mysql> select count(*) from lp_projects where datasource_id=227;
18956

mysql> select count(distinct dev_loginname) from lp_developer_indexes where datasource_id=227;
34051

Available on our Google Code downloads page: Launchpad data