What: Autopano (registered version @ 99 euro)
Verdict: totally awesome.
Pros:
- Very fast, reliable stitching of images together
- Excellent colour and exposure correction, even if you don’t lock your exposures
- Supports HDR imaging! Create panoramas out of raw format files and then use tone mapping software like Qtpfsgui
- Excellent barrel distortion compensation on wide angled shots
- Qt4! (and cross platform)