ambient 

Natural Ambience is software that turns your PC into a Sound Therapy machine that recreates eight different nature soundscapes with optional background music. It operates in the background allowing you to work while receiving the soothing benefits o......

This vst plugin attempts to emulate the classic string ensemble sound, made popular by such classic synths as the Crumar Performer or the Arp Solina.

This virtual instrument uses formant synthesis to generate rich, atmospheric pads sounds. The program is fully midi-controlled.
Angelina is available both as a vst plugin or as a standalone synth.

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, ...

 ambient