• Oficial Page PSK31
• Digipan  PSK31
• ZAKANAKA PSK31
• MIXW PSK31
• Logger PSK31
• HamScope PSK31, RTTY, MFSK, Morse - free - by KD5HIO - English help    Spanish help
• PSK31 official page by G3PLX
• PSKGNR 
• WinPSK by AE4JY - Winpsk version by KA1DT
• Wlog2000 new version commercial program for Windows by HB9OAB
• MultiPSK for Windows - by F6CTE
• Stream PSK31 by IZ8BLY
• W1SQLPSK PSK31- versión en español - in japanese
• DXPSK - free - by F6GQK
• WriteLog is Logging/Contesting Windows program  by Wayne W5XD tha offers a PSK31 module over Soundblaster
• PSK31SBW
• Digital On Six software and help &  frequencies operation
• KPSK new Linux KDE X-Windows desktop program available from Luc LX2GT
• LinPSK for Linux - by DL1KSV
• G-PSK31 for Linux - by LX2GT
• TWPSK - for Linux - by DL9RDZ and WA0EIR
• Phase Shift - for Linux - by PU1JTE
• Multimode - for Mac - by N3JLY
• WinWARBLER
• PSK-PAL   - by VK7AAB
• PSK31 by Lan-Link for Windows - G3ZCZ
• DX4WIN integrated PSK31
• PSK31SBW by G3PLX
• W1SQLPSK decode 20 signals, include log for Win - free - W1QLP
• MixW32 For PSK31 Supports PSK31, RTTY, CW, Packet, contesting, Callbook, well as CW Transmit and CW receive
• MixW32 for PSK31 spanish
• MixW Help by K4SET Jan-2002
• StatsFmreRtty2.zip FMRE International RTTY Contest by MixW Mexico32.dom
• New BPSK Software from VE2IQ
• PSK31 news Linux version Sound Blaster - DL9RDZ     instructions last version:  psk31lx-0.5.tgz
• PSK31SBW for MS-DOS  by G3PLX
• P31EVD Motorola version EVM  for MS-DOS - by G3PLX
• PSK31C50 Version MS-DOS by G0TJZ
• PSK31EVM301 MS-DOS by DF6JB
• PSK31 - OH2GI-HAM SYSTEM MS-DOS commercial
• PSK31 and others modes MS-DOS free - by PA3BYZ
• Analyzer2000, now with PSK31 Driver
• MIXw32 de UT2UZ
• PSK31_Keyboard to Keyboard on HF
• PSK31 by ON4VT
• PSK31 by WM2U (PSK31SBW)
• PSKGNR_(Front end for PSKSBW Ver 1.06)
• MixW32 for PSK_(PSK program by UT2UZ)
• Analizer 2000 (PSK31 + AF Analizer) 
• Linux PSK by DL1KSV
• WO-PSK by ZS5WO
• MFSK16 and PSK63F
• Fuzzi Digital Modes by ZL1BPU
• Download
• MT63 for soundcard
• MODE J2C. Download
• MODE J2C. Information
• MT63 new digital mode
• PSKGNR V 1.34
• THEORY

        TUTORIAL

• PSK31 Fundamentals -- From NB6Z
• PSK31 - -- PSK31 interface diagrams
• PSK31 -  -- From the ARRL
• What is PSK31 you may ask? It's simple, and yet it's not. by K1VY
• FYI: GENERAL DIGITAL MODES DESCRIPTIONS
• Fuzzy Modes and Modern Digital Modes - from the ZL1BPU Web Site 
• ON4CAY -- Lots of good sound card information
• DX4WIN -- Version 5 with integrated PSK-31 interface control
• PSK31 and other PC Magic -- Includes HamScope -- From K1VY
• PSK31 - -- "Official" Home page
• PSK31 -  -- Excellent PSK Article From the ARRL (Need ARRL Membership to Read)
• PSK31 DX Notes
• Description of PSK31
• PSK31 frecuencies
• Article about PSK31 by Fred OH/DK4ZC in german
• Article by Eduardo EA2BAJ by PSK31 on HF
• Article by Eduardo EA2BAJ about new digital modes on HF which includes a description of PSK31
• Very informative article by Peter G3PLX published dec-1998 and jan-99 RADCOM magazine pdf.format
• Article about PSK31 by DK5RK  in german - published in magazine "Funkamateur" - pdf.format
• Veri nice appreciation of PSK31 by N2HOS
• Article in german by DL6IAK
• MixW32 For PSK31 -- Supports PSK31, RTTY, CW, Packet, contesting, Callbook recognition as well as CW Transmit and CW receive
• PSK31 - -- Lots of Digital Waveforms
• PSK31 - -- Soft and Hard for PSK31
• PSK31 - - PSKGNR V1.34
• BUX CommCo® Home of the RASCAL®   PSK31, WSJT, & SSTV Interface Boxes and Cables
• Sound Card Interfacing for RTTY, PSK31, and SSTV -- Via W5BBR
• PSK31 for Linux/Soundblaster -- Via Hansi Reiser, DL9RDZ
• PSK31 Software -- From The DXSoft Group
• PSK31 Awards From Jay, N3DQU
• HamScope An Amateur Radio Digital Communications Interface for PSK31 (BPSK and QPSK ) RTTY, ASCII, MFSK16, HamScope native HFSK16, CW. From KD5HIO
• Hamcom 3.1( Receive and transmit CW,RTTY,AMTOR)
• HamScope v. 1.21 -  multimode (BPSK - QPSK - RTTY Baudot/ASCII 7/ASCII 8 - MFSK16 - HFSK16 - CW) by KD5HIO.
• Hellschreiber
• Hellschreiber Mail List
• PSK31 by ON4VT
• PSK31 by WM2U
• PSKGNR_(Front end for PSKSBW Ver 1.06)
• RadioCom (DSP-Filter/Analyser, RTTY, CW,Fax, SSTV & DCF-77)
• Radio Raft by F6FLT AllMode Decoder
• Software for Fuzzy Digital Modes
• WINTTY_ (RTTY for Kam and PK 232)
• SkySweep Technologies  -- Adaptive multi-channel and multi-rate digital signal processing.

• ARTICLES
•  
• PSK31 Description
• Available Software and Hard for PSK31

• Proposed frequencies for PSK31 QSO

• Articles About PSK31

• PSK31 Mailing List WWW Archive

• Others PSK31 Links

• "Bux Bitz and Bytez" by K4ABT

• "PSK31: A new radio-teletype mode with a traditional philosophy"   An informative 10-page article by Peter Martinez, G3PLX.  Peter has been a leader in the definition of, programming for, and evangelizing about PSK31.

• "Novel Robust, Narrow-band PSK Modes for HF Digital Communications"   Interesting web page document by Johan Forrer.
• "Welcome To PSK31 de wm2u" A helpful web page with lots of links.
• "PSK31 Fundamentals"  Another good article by Peter Martinez, G3PLX with addendum by NB6Z.