Magnus Choir is a virtual instrument plug-in which can be used to create natural and synthetic choirs, using a combination of synthesis and sampling. Available for Windows and Linux based VST/FST hosts.
For a realistic choral sound, Magnus includes a variety of vocal textures and sustained vowels in multiple dynamics: Espressivo, Staccato, Marcato, Crescendo, Decrescendo, Tenuto, Maestoso, Legato, and more...

SYNTHEWAY STRINGS is a "rich-sounding" sample based string VSTi for Windows.
Syntheway Strings have the ability to produce beautiful and lyrical lines, as well as powerful and forceful articulations. You'll find string orchestra sustained, Espressivo, Staccato, Marcato, Crescendo, Decrescendo and more!