VSTi, this term stands for virtual instruments and those who work on DAWS utilize these important tools for creating music. VST's are pieces of data and software which can recreate the sounds of many forms of music. They were created by Steinberg, who in return is owned by Yamaha Corporation. When they first came out, many of the plugin attempts to recreate certain sounds such as piano, synths and guitars were far from the original but over time, the market for music software began to flourish and the sound became much more realistic.
The most popular music producers on the planet have all started from having almost nothing. So it can be tough to find a very well made plugin for your musical work. Here are the top 10 FREE VST instruments I've encountered since nobody else has yet made this list.