The official software is available as a free download from the Soundplant website for both Windows and macOS.
While the free version is functional for basic needs, the Registered Version (available for $60 or as a $30 upgrade) unlocks additional capabilities: Soundplant Free Download
: You can simply drag and drop sound files onto specific onscreen keys to assign them. The official software is available as a free
Advanced features like MIDI input and background key triggering. Permission for professional/commercial use. Soundplant by Marcel Blum Soundplant Free Download