NOTE: Tu2 is only part freeware - if you wish to unlock 'extended' features you are required to register (read: pay a little money). Aside from this, it appears totally free.
Tu2 is a (standalone) phrase sampler which means it will make music and sound out of samples you feed it. Tu2 will stack samples, loops and soundbites for you. You can slice 'n dice them, mutilate them, filter them, remix them, put effects over them and while you're at it you have the freedom to put your own personal sonic sauce over the outcome. It has numerous built-in effects and tools which will help you mangle your samples any way you like.
Freeware mode
Yes, you can use Tu2 for free. The basic (most important) functionality is then available to you, including the Variator, a drumcomputer, WAV-export and an integrated sample editor.
Extended mode
If you'd like to unlock more features (user-drawable filters, effects, MP3 export, etc.) you can register Tu2 for a discounted price.
