Log4OM modern user interface runs on PC, Windows Tablet and can be started also from an USB key with limited resources.

Learn more

Fully customizable

Over a hundred options makes Log4OM your best friend, easily following all your needs.

Learn more


Integrated with LOTW, EQSL, QRZ, HAMQTH, Clublog, HRDLog, SOTA, IOTA it's your unique interface to external world.

Learn more


Your log is always available and automatically uploaded to external services and exported in ADIF everytime you use the software.

Learn more

New Log4OM home

Welcome to the new Log4OM website.

Our forum has been updated and moved here.

Log4OM @ DXCoffee Party 2015 in Florence

Log4OM will be presented at the DXCoffee Party in Florence (ITA) in April during the Florence Hamfest. A nice opportunity to meet the author.


Log4OM 1.20 available for download

New features

• Added capability to set custom SQL queries in log searches.

• New solar flux data charts and displays added in menu and recorded with logbook entries.


• “-” separator removed from contest auto-generated SENT value

• ROS mode displays the RST as dB

• Fixed incorrect data being saved on QSL sent/rcvd status under some conditions

• A & K indexes set on QSO using planetary data

• LAT/LON now being updated on lookup and added to log entry

• CW Skimmer and RBN now displaying in cluster correctly