Trusted QSL is a suit of open source libraries and utilities to support using digital signatures for Amateur radio QSL information.
TQSL is application used to digitally sign and upload QSOs to the ARRL's Logbook of the World (LoTW) online service.
TQSL accepts QSOs in a log file whose format is either ADIF or Cabrillo, which many logging applications can export. TQSL also includes a simple QSO Data Editor that can be used to create and edit log files in ADIF format.
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