Ham Radio: Windows (PC)

From the author's website:
A comprehensive logger program designed for amateur radio station operators. It has convenient interface, a good set of tools, and is fast and very easy to use. It looks like your paper logbook and uses all power of your computer. It can be integrated with the CW terminal program CwType, morse decoder CwGet and RTTY/PSK31 software TrueTTY. Also you can use AAVoice for voice operations. AALog is eQSL.cc compatible.

AC Log aka Amatuer Contact Log by N3FJP is a general purpose logging package.

Commcat is a logging program with DX Spot Manager, band spotter (graphical), circle map, and programmable cw keyboard interface.

CT is a DOS based contest logging software program.

DX4Win supports awards, contesting, cw keyboard, external data, gray line map, import/export, lables, master call data, multiple logs, packet, PSK31, QSL management, filters, radio control, rotator control, rtty, sorting, and a world map.

From the Scientific Solutions Inc website:
Scientific Solutions, Inc. is pleased to offer our latest evolution in quality logging software for the 32 bit Windows operating system. Packed with the latest technology, DXbase brings you the largest set of features ever offered, in a rock solid professional product. Integrate VHF PacketCluster™, Internet Cluster, CW, and HF radio simultaneously. Let the DXbase Wizard prepare data for labels and user designed reports. Use the Label/Report graphical design module to create your own labels, QSL cards, and reports with drag and drop technology that you'll only see in DXbase. Instant display of statistics for worked/confirmed, award submission, and tremendous flexibility to modify the screen displays, are but a few of the comprehensive capabilities designed into DXbase.

records and manages QSOs
tracks progress towards DXing objectives (DXCC, 5BDXCC, honor roll, ARRL Challenge, TOPBAND, TOPMODE, TOPLIST, WAZ, 5BWAZ, WPX, WAS, WAC, US Counties)
extracts address information from the Radio Amateur's Callbook, HamCall, and/or QRZ callbooks
prints QSL cards and labels
prints envelopes and address labels
provides real-time upload to eQSL.cc, and updates logged QSOs to reflect confirmation status downloaded from eQSL.cc
prepares batch uploads for the ARRL's Logbook of the World (LotW), and updates logged QSOs to reflect confirmation status downloaded from LotW
logs WinWarbler RTTY and PSK QSOs with accurate QSO frequencies
uses Commander for Elecraft, FlexRadio, Icom, Kenwood, TenTec, and Yaesu transceiver control
uses DXView for progress reporting and plotting
uses Pathfinder for QSL route lookup

EasyLog has a wide number of features and functionality.

Freeware Windows-based contest logging software:
Free Windows software supports Win98, ME, W2K, NT & XP.
° Does not control radios or rotors, no networking or Packet.
° No contest setup or config files needed to start a contest.
° Is a contest logger, not `Awards` software. 5000 QSO limit per log file.
° Creates CQ Zone, ITU Zone, Grid square and DXCC totals.
° 54 QSO Parties supported.
° Logs many VHF/UHF contests not supported by VHF LOG.
° Shows Counties/States & Sections worked, to be worked.
° Automatic CW message with incremented serial number.
° Grid Square distance/heading routines, plus Grid maps.
° Selectable partial callsign search. Use GenSort to make datafiles.
° Writes ASCII and Cabrillo format Log files.
° Imports and exports ADIF format files.
° Writes STF log files for selected DARC contests.
° Writes EDI log files for R1 VHF/UHF contests. EDI Application
° Auto UTC offset. Just in case, adjust the UTC hour in your log using Gen Time.
° DVK - Call the working station in your voice.
° CW keyer - Memory and keyboard CW, w/ TX PTT.
° Burst CW - multi-speed contest messaging.
° Windows style HELP, general and for each contest.

Based on MS Access, Ham Log Book is a freeware (simple) logging program.