FLDigi is described as 'Amateur Radio - Digital modem program for Linux, Free-BSD, OS X, Windows XP, W2K, and Vista. It covers PSK/RTTY/OLIVIA/CONTESTIA/THOR & THROB' and is an app. There are four alternatives to FLDigi for Windows. The best FLDigi alternative is Ham Radio Deluxe. It's not free, so if you're looking for a free alternative, you could try Logger32 or Digipan.
Ham Radio Deluxe (HRD) is an integrated suite of software products for amateur radio. The five modules in the suite provide rig control,logging, digital communications, satellite tracking, and rotator control.
Welcome to Logger32, a 32-bit Amateur Radio logging program written by Bob Furzer, K4CY. Bob is also the author of Zakanaka, and an older 16-bit version of Logger. Logger32 is currently supported to run under Windows 7, 8, 8.1 and 10.
Amateur Radio Freeware Program for PSK31, providing Digital Panoramic Tuning when used with a Windows PC and an amateur bands transceiver
Hambook is a modern general-purpose CAT-control software package for HAM radios targeting the Windows platform. At the time of writing, the application is designed for Yaesu FT-891 but due to the similarities between Yaesu radios, more devices can be added upon request.
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