Text To Speech Synthesizer
Speech Synthesizer is a great Text To Voice Synthesizer for Children to learn English Speaking & Vocabulary. Speech Synthesizer 5. 0 is a powerful text to voice converting application that is extremely useful for converting all types of text to speech, learning English pronunciation and... Features include a Realistic embedded Multiplex Text to Voice Synthesizer, reads all Text, RTF and Word documents, customizable display area, Animated speaking character, different Voice outputs, adjustable speaking speeds, variable voice tones from low to high pitch, graphical sound output visual...
http://www.caltrox.com/products/speech.htm - 6Mb - Download - Screenshot

Space Synthesizer
The Space Synth is a polyphonic VST instrument plugin, with an ambient sound. It is suitable for ambient music, space music, ambient techno and electronic music in general. The plugin has a unique sound, which makes it very suitable for the musician who needs a fresh new sounding addition to... A resonator in combination with an ensemble, an analog style sequencer and an evolving wave oscillator, creates highly sophisticated sounds generated from a ground breaking synthesizer architecture. ... There are so many other options in this plugin, which cannot be described here.
http://hillborg.se/mhc.se/plugins/spacesynth/spacesynth.exe - 3Mb - Download - Screenshot

Space Synthesizer Mac
The Space Synth is a polyphonic AU instrument plugin, with an ambient sound. It is suitable for ambient music, space music, ambient techno and electronic music in general. The plugin has a unique sound, which makes it very suitable for the musician who needs a fresh new sounding addition to... A resonator in combination with an ensemble, an analog style sequencer and an evolving wave oscillator, creates highly sophisticated sounds generated from a ground breaking synthesizer architecture. ... There are so many other options in this plugin, which cannot be described here.
http://hillborg.se/mhc.se/plugins/spacesynth/SpaceSynth.dmg.zip - 3Mb - Download - Screenshot

PianoFX STUDIO
PianoFX Studio 4. 0 from Tanseon Systems is an advanced Piano Music Keyboard Synthesizer for the Personal Computer. You can play live piano music using your PC keyboard or mouse without the requirement of a conventional Piano. The player piano music keyboard interface & piano keys has been... Features include Realistic full-size 64 piano keys music synthesizer, 8 Octaves of piano music note output, fully featured with ultra-high quality sound output, 127 different Musical and Percussion Instruments, Variable Pitch and Volume Adjustment, full piano chords and realistic piano keys, 4-note...
http://www.tanseon.com/downloads/down1/pianofx4.exe - 9Mb - Download - Screenshot

Digital Ear Real-Time
> What is Digital Ear Real-Time? Digital Ear Real-Time can analyze a recorded or live solo performance (e. g. a singing human voice, or a musical instrument) and convert it to a standard MIDI file. That file can be send directly to any synthesizer, or can be imported to your favorite sequencer (e. ... A unique capability of Digital Ear not found elsewhere, is that it can capture and send to your MIDI synthesizer, detailed envelope and timbre dynamics events. ... Any vibrato, tremolo, pitch-bend, or portamento effects of your recorded sound will be faithfully converted and reproduced into...
http://www.sitebeans.com/demos/digitaleardemo-setup.exe - 4Mb - Download - Screenshot

Awave Studio
Awave Studio let's you convert, edit, play or process a huge amount of audio & synthesizer file formats (around 260 different formats! ), including CD-ripping, MIDI SDS or SCSI SMDI transfers, reading of non-Windows compatible AKAI, Kurzweil and Roland CD-ROM's, conversion of mobile phone ring... - Need an instrument editor for your synthesizer or wavetable sound card? ... Or perhaps you have sample libraries that you've purchased for one synthesizer and now want to use them with another? ... s not the end of it - it can also write the song to a WAV file on disk for you!
http://www.fmjsoft.com/download/awave95.zip - 2Mb - Download - Screenshot

A1 SpeechTRON
A1 SpeechTRON is a powerful Text to Speech Voice Synthesizer application that is extremely useful for converting English Text to Speech. It can be used to read notes, documents, e-mails, e-books etc. It can convert any type of English text to voice that is typed or pasted into its text Window. ... Features include: Realistic embedded Multiplex Text To Speech Synthesizer, reads all Text, RTF and Word documents, customizable display area, 18 different Voice Types, adjustable Speaking speeds, variable Voice Tones from Low to High Pitch, Graphical sound output visual display, record speech...
http://www.caltroxsoft.com/products/a1-speechtron.htm - 11Mb - Download - Screenshot

Rhino
Powerful virtual synthesizer plugin with 6 oscillators per voice, a huge selection of waveforms, graphical multipoint envelopes with curvature controls (sync-able to tempo) , dual multimode filters, waveshaper, built-in effects, ...
http://bigtick.pastnotecut.org/index.php?action=SEND&fileid=140 - 9Mb - Download - Screenshot

ARPTON Synthesizer-Arpeggiator-Player
All-in-one MIDI musical instrument with Arpeggiator and MIDI / MIDI Karaoke Player. Allows to play piano on PC keyboard, play with any MIDI file and sing at the same time. Works with any hardware or software synthesizer installed in your computer. Includes "basic" Java Soundbank, which can be... Automatically saves and replays your last saved arpeggios. ... Saves your color preferences for the keyboard and background. ... Sends MIDI messages to MIDI Out port of PC. ... Does not require from users to download and install Java Runtime Environment (JRE).
http://www.arptonsoft.com/downloads/Arpton/Arpton_1_1a_d0.exe - 1Mb - Download - Screenshot

ARPTON Lite - Synthesizer-Arpeggiator
All-in-one MIDI musical instrument with Arpeggiator and MIDI / MIDI Karaoke Player (Lite version). Allows to play piano on PC keyboard, play with any MIDI file and sing at the same time. Works with any hardware or software synthesizer installed in your computer. ... Automatically saves and replays your last saved arpeggios. ... Saves your color preferences for the keyboard and background. ... Sends MIDI messages to MIDI Out port of PC. ... Does not require from users to download and install Java Runtime Environment (JRE).
http://www.arptonsoft.com/downloads/Arpton/Arpton_1_2h_d0.exe - 1Mb - Download - Screenshot