MIDI LFO
MIDI LFO can be used to apply an LFO to your Yamaha QY100 tracks (or other MIDI capable devices). You can choose what type of waveform, rate, MIDI CC, and other parameters to control with the LFO. The web tool even listens for play messages from your device, allowing it to re-trigger/sync the wave every time you begin playing on the device.
MIDI Logger
MIDI Logger can be used to keep track of messages being sent via a MIDI cable to your computer. MIDI Channels can be filtered out using the toggle buttons above the logger to help analyze incoming messages.