Spitfire Audio Labs offers a wide range of free orchestral VST instruments, including strings, brass, woodwinds, and percussion. The instruments are all of high quality and sound great.
2. ProjectSAM Symphobia Lite
ProjectSAM Symphobia Lite is another great option for free orchestral VST instruments. It includes a variety of strings, brass, woodwinds, and percussion instruments, all of which are of excellent quality.
3. Vienna Symphonic Library Player
The Vienna Symphonic Library Player is a free software sampler that can be used to play back Vienna Symphonic Library's extensive collection of orchestral instruments. The Player is very versatile and can be used to create a wide variety of orchestral sounds.
4. sforzando
sforzando is a free and open-source software sampler that supports a variety of sample formats, including SFZ and WAV. It can also be used to play back Kontakt instruments. sforzando is very lightweight and easy to use, and it sounds great.
5. FluidR3 by AIR Music Technology
FluidR3 is a freeware software sampler that offers a wide range of sample-based instruments. It includes strings, brass, woodwinds, and percussion, as well as an extensive collection of synthetic sounds. FluidR3 is very easy to use and sounds great.