LabNation SmartScope: unique multi-platform USB oscilloscope | Elektor Magazine
Raspberry Pi Pico 200Khz Digital Oscilloscope - Hackster.io
Loto USB Oscilloscope OSC482M for Both Android Phone/Tablet & Windows PC, 2 Channels, 50M S/s, 20MHz (Bandwidth), 8~13 bit Vertical Resolution: Amazon.com: Industrial & Scientific