Open source libraries and utilities to support using digital signatures for Amateur
radio QSL information. It can be used to digitally sign and upload QSOs to the ARRL's Logbook of the World (LoTW) online service and to manage the Callsign Certificates used when digitally signing. TQSL accepts QSOs in a log file whose format is either ADIF or Cabrillo, which many logging applications can create.
Mall Creeps
Features Twofish 128-bit encryption for protecting yourconfidential files from prying eyes
Provide Win32 EXE file packing and to protect them against reverse engineering
Excellent tool for managing ZIP archives. It is easy to use, and provides a wide range of features for creating, extracting, and managing ZIP archives
Zip It is lightweight easy-to-use archiving and backup utility
CoffeeZip is a powerful file archiver with a high compression ratio
It will help you batch-extract and verify RAR and ZIP archives
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