Club Log is a free, web-based tool for producing DXCC league tables, expedition tools, log search services, and most-wanted lists for ham radio. It also analyzes radio amateurs' log files, offering a wide range of reports to individual users and identifying large-scale trends based on all activity in the database. Signed-in users can upload, track, and refine their logs and DXing progress more closely. Each participant increases the usefulness of the database and, as a result, helps expeditions plan their future activities. Developers can access Club Log's information and services programmatically using its REST API.