Several companies offer VST emulations of classic synthesizers. While there might not be an "official" Roland JD-800 VST, third-party developers create and distribute plugins that replicate its sound. Some popular options include:

Would you like to know more about a specific plugin or the JD-800 in general?

When looking for and downloading software or plugins:

After some contemplation, Alex decided to support the developers and purchased the full version of the plugin from the official RetroSound Labs website. He received a download link and a serial key, which he used to unlock the full features of the plugin.