Best Free Drum VSTs: Meet the Free VSTs That Don't Suck
Punk Labs Release OneTrick SIMIAN Open-Source Drum Synth - Bedroom Producers Blog
Amazon.com: IK Multimedia UNO Drum analog and digital drum machine with 6 analog voices, 64-Step Sequencer, USB and 2.5mm MIDI, 100 pattern presets, battery-powered and portable : Musical Instruments
Hydrogen (software) - Wikipedia
Mininn Drum - Audio Blast
Hydrogen Drum Machine - Free Drum Programming for Windows, Mac, and Linux - YouTube
Mininn Drum - Audio Blast
Open source high-performance drum machine available for free "Hydrogen" - GIGAZINE
Free Neural Network Drum Machine For Mac, Windows, Linux – Synthtopia
Bitwig Drum Machine Tutorial - Morningdew Media
Free Open Source Drum Synth, 'Chow Kick', For iOS, Linux, Mac & Windows – Synthtopia