Phasex is described as 'PHASEX is an experimental software synthesizer for use with Linux/ALSA/JACK' and is a Music Production App in the Audio & Music category. There are more than 10 alternatives to Phasex for Windows, Mac, Linux, BSD and DSSI. The best alternative is Qsynth, which is both free and Open Source. Other great apps like Phasex are ZynAddSubFX (Freemium, Open Source), FluidSynth (Free, Open Source), samplv1 (Free, Open Source) and Tyrell N6 (Free).
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.
ZynAddSubFX is a fully featured open source software synthesizer capable of making a countless number of instruments, from some common heard from expensive hardware to interesting sounds that you'll boost to an amazing universe of sounds.
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.
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.
This program was created to make playing music on a computer more intuitive and affordable for anyone who wants to make music. It offers the most natural way to make music by simply using your touch screen or your hand in front of the web cam.
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.