First two Timelapse's

Thanks for sharing your time lapse work, nice work!

Is there any software which can help aligning pictures? I am doing a timelapse of a building in the neighbourhood. I am doing a daily trip on the roof of our office for that. To avoid that I have to drag a tripod along (or leave a cheap one on the roof) I use the artificial horizon feature of the D7000 and focus on the same spot every day. It works pretty accurate, but not 100% perfect of course.

However, reading this post I meant to ask whether there is a software which can align all pictures automatically? Thinking of automatic panorama and HDR tools one might think there is?

Thanks for your input.
Uli