FluidSynth!

ZynAddSubFX is an open source software synthesizer for Linux, Mac OS X and Microsoft Windows.

TiMidity++ is an open source MIDI to WAVE converter and player.

Tyrell is the name of a project by the German online magazine Amazona.de. A reader survey and follow-on forum posts provided a pool of ideas for a low cost HARDWARE analogue synth, which Mic 'Moogulator' Irmer used to develop quite a powerful concept. Based on a design similar to Roland's classic Juno 60, a few modules and novel features could be added without making the product too expensive...

ABSYNTH 5 is an exceptional synthesizer with unique sonic potential and more than 2,100 preset sounds. Its speciality is a limitless spectrum of unusual, evolving sounds created using the powerful, hybrid synthesis architecture and sophisticated modulation and effect system - resulting in sounds far removed from the everyday. What's more ABSYNTH 5 is not just a synthesizer, but a powerful effect plug-in for treating audio tracks using the unique ABSYNTH 5 effects bank.

Qsynth is a simple Qt4 application wrapper for the FluidSynth software MIDI sequencer for Linux.Qsynth is a fluidsynth GUI front-end application written in C++ around the Qt4 toolkit using Qt Designer. Eventually it may evolve into a softsynth management application allowing the user to control and manage a variety of command line softsynth but for the moment it wraps the excellent FluidSynth. FluidSynth is a command line software synthesiser based on the Soundfont specification. »

TAL-NoiseMaker is an improved version of TAL-Elek7ro and has a completely new synth engine and a lot of improvements in sound and usability. The synth also includes a small effect section with a reverb, chorus and a simple bit crusher effect.

PHASEX is an experimental software synthesizer for use with Linux/ALSA/JACK. The name comes partially from its experimental method of using phase offset modulation, where each oscillator can have its phase offset between right and left channels modulated by an LFO or another oscillator.

Yoshimi is a software synthesizer for Linux based on the 2.4.0 release of ZynAddSubFX, written by Nasca Octavian Paul. Yoshimi delivers the same synth capabilities, along with very good Jack and Alsa midi/audio functionality.

WhySynth is a versatile softsynth which operates as a plugin for theDSSI Soft Synth Interface. A brief list of features:

Podolski is a simple, CPU-efficient virtual analogue synthesizer. Basically a cut down version of FilterscapeVA with just one oscillator, one filter, one envelope and two LFOs, it also features a Zebra-style arpeggiator/sequencer plus chorus and delay effects. Podolski's specialities are the Click parameter (emphasizes the filter attack) and its ability to seamlessly morph between three waveforms (WaveWarp).

Zebralette is just one of Zebra2's oscillators packed into a simple, easy-to-learn framework – but you have everything you need to make some pretty amazing sounds. Sounds that can be directly loaded into Zebra2 later. And should you eventually decide to upgrade to Zebra2, you will already know everything there is to know about the oscillators – which is quite an advantage!