Moog Synthesizer

Analog modeling synthesizer, with LFO modulators and fine MIDI control. Platforms: Windows, Mac, Linux

digui is a pitch-controlled, digital additive synthesizer. No MIDI needed! Just plug in your guitar, toy keyboard, microphone, etc. and play away. Platforms: Windows, Mac, Linux

gsynth is designed to be an extensible, modular synthesizer. It is intended as an open-source replacement to the renowned 'buzz' program for Windows. Platforms: Windows, Mac, Linux

midi editing software for use with the Roland GR-55 guitar synthesizer, to allow graphical representation of the internal settings and parameters of the GR-55. Realtime editing and patch data backups, bulk patch editing. Platforms: Windows, Mac, Linux

JSynthLib is a universal MIDI synthesizer librarian / editor. The project aims to eventually support all existing synthesizers. Platforms: Windows, Mac, BSD, Linux

Soundbench is high-quality GPL-licensed software synthesizer written in C++/Qt that is meant to work across all major platforms (though especially most common Linux distributions). Soundbench follows a development philosophy that emphasizes getting everything stable before adding new features.... Platforms: Windows, Mac, Linux

You can use Apple's speech synthesizer to easily create audio files that you can put on your iPod. * Make podcasts of blogs or other web pages. * Make your own "audio books" from downloadable free e-texts of books. * Create sound files saying every track in a playlist, so you can get a DJ on... Platforms: Mac

Cadenncii is a free software for editing scores for several singing synthesis systems. VOCALOID, VOCALOID2, UTAU, STRAIGHT with UTAU, and AquesTone are available as synthesizer. Platforms: Mac

NorthPole is a free effects plug in for AudioUnit compatible applications on the Macintosh. It adds a fully programmable virtual analog synthesizer filter with resonance, envelope follower and an integrated post-filter digital delay to your audio production environment. This free plug in equips... Platforms: Mac

This is a simple but nice-sounding polyphonic music synthesizer that can be run either as a standalone Java application with MIDI or (thanks to jVSTwRapper) as a VST instrument. The attached JAR file contains the main application and includes the full source code. The latest version (a40) has a... Platforms: Mac

CoCoViLa is a model-based software development platform. The platform provides a framework for developing visual specification languages. It includes a visual editor for drawing schemes and a synthesizer for generating a Java program from the scheme and the class specifications. Platforms: Mac

terminatorX is a realtime audio synthesizer that allows you to "scratch" on digitally sampled audio data (*.wav, *.au, *.ogg, *.mp3, etc.) the way hiphop-DJs scratch on vinyl records. It features multiple turntables, realtime effects (buit-in as well as LADSPA plugin effects), a sequencer and... Platforms: *nix

Rakarrack is a guitar effects processor for GNU/Linux simple and easy to use but it contains features that make it unique in this field of applications. It integrates a tuner and a MIDI converter (experimental). It can also be handled by an external MIDI controller. The settings designed by the... Platforms: *nix

eSpeak is a compact open source software speech synthesizer for English and other languages, for Linux and Windows. http://espeak.sourceforge.net eSpeak uses a "formant synthesis" method. This allows many languages to be provided in a small size. The speech is clear, and can be used at high... Platforms: *nix

Bristol is synth emulation package for a diverse range of vintage synthesisers, electric pianos and organs. The application consists of a multithreaded audio synthesizer and a user interface called brighton. Features . Over thirty emulators to mix and match . Multitimbral engine .... Platforms: *nix

Syncaine TM-200X is Analog Virtual Synthesizer with unique Fat Mode for very Fat Leads, Draw Organ & more instruments. The plug-in contains: Mod & Main section. LFO section. Osc section. Filter section. Amp section. Delay section. Reverb section. Detune section. Master... Platforms: Windows, Windows 8, Windows 7

Alice-1377 is created on base of the classical soviet synthesizer Alisa-1377. Alisa-1377. This electronic musical synthesizer intends for signal's design of audible range of band with a possibility to play solo musical compositions. It can be used to create audio effects if connected to the... Platforms: Windows, Windows 8, Windows 7

Change the standard Windows sounds on fragments of the music of XVI century by composer Padre Manoel Rodrigues COELHO da Costa (1555-1635; Portugal) from His book: "FLOWERS OF MUSIC" (printed in 1620 year). The audio was created on the synthesizer: "ENSONIQ TS 12". FREEWARE. 1983 Kb. The... Platforms: Windows

BankStep is a software emulation of hardware bank sequencers found in the big analog synthesizers, that produce control for the sound but not the sound itself. Instead of analog control voltages BankStep produces MIDI (and can make standard MIDI music files). Otherwise, BankStep functionally... Platforms: Windows

The Proxima Controller is an application that allows you to use the mouse and computer keyboard to play external MIDI devices such as synthesizers and tone generators. It is also possible to play internal devices if they are designed to respond to MIDI messages (for example, the Microsoft GS... Platforms: Windows, Windows 8, Windows 7