Online Callbook is an extension for Mozilla Firefox to find QSL information from the HAM radio web sites, such as QRZ.COM, ARRL.ORG, RAC.CA, QRZ.RU, BUCK.COM, and CQHAM.RU using shortcut buttons on the toolbar.
| License | Free |
|---|---|
| File Size | 10.39 kB |
| Version | 2.0 |
| Operating System | Windows 2000 Windows Me Windows 7 Windows Windows XP Windows 98 Windows Vista |
| System Requirements | Mozilla Firefox |