Yes, other than iTunes, there are few more softwares too which can manage your iPod/iPhone efficiently. iTunes at times can have compatibility issues, like if you are on Linux or an older windows like Windows XP SP1, then iTunes just wont install for you. Also, iTunes is a heavy tool, where most of it’s alternatives are lite applications. Below are 5 Free iTunes Alternatives for your iPod / iPhone.
Note: Please be careful when using these tools, you might lose all of your iPod data, also, these softwares are not very good in syncing your iPod but do great in manually managing your iPod. Also, some of these might not support new iPods(Like iPod Touch) or new iPhones.