iTunes alternatives - Manage your iPod without iTunes

Change
Add and remove music, videos, playlists and artwork on your iPod.

Backup
Backup all those tracks you just can't lose onto your computer. Import them automatically into your iTunes library.

Share
SharePod can run straight from the iPod itself, so you can use it at work, school, home - wherever you and your iPod are.

YamiPod is a freeware application to efficiently manage your iPod under Mac OS X, Windows and Linux. It can be run directly from your iPod and needs no installation. Take a look at the feature list to find out what it can do and feel free to suggest anything that might be missing.

Floola is a freeware application to efficiently manage your iPod or your Motorola mobile phone (any model supporting iTunes except iPhone, iPod touch, nano 5G and latest iPod shuffle). It's a standalone application that can be run directly from your iPod and needs no installation under Linux (any GTK2 distro), Mac OS X (10.3.9 or newer!) and Windows (98 or newer, including Vista).

Floola supports almost all features offered by iPods including photos, artwork, podcasts and smart playlists!
It automatically converts any incompatible audio or video file so that you can copy almost any file to it. It allows adding youtube and myspace videos with a single click. Now it even makes it possible to keep your Google calendars synched!