Volume Icon aims to be a lightweight volume control that sits in your systray.
It is often used in conjuction with the lightweight tint2 panel/taskbar.

Features

- Change volume by scrolling on the systray icon
- Ability to choose which channel to control
- Several icon themes (with gtk theme as default)
- Configurable external mixer
- Volume Slider
- Hotkey support

WWW: https://github.com/Maato/volumeicon/