For working with panoramic photos, it's hard to find a more full-featured solution than PTgui. It specializes in panoramas and while many tools can handle panoramic stitching, few offer the speed, features and focus of PTgui.
Most alternatives are commercial apps, though some free options do exist. Easily filter the list by platforms like Mac, Windows and Linux.
Hugin is an easy to use cross-platform panoramic imaging toolchain based on Panorama Tools. With Hugin you can assemble a mosaic of photographs into a complete impressive panorama, stitch any series of overlapping pictures and much more.i
Autopano is the most spectacular breakthrough in automated picture stitching in recent years. First software to automatically detect pictures belonging to a panorama, First software to perform HDR stitching, First software to really correct color and exposure variations between source images. Autopano is incredibly fast: it will take your workflow and productivity to new heights. Autopano is extremely efficient, even in the most difficult cases.
Stich Panorama is a plug-in for the GNU Image Manipulation Program (GIMP) which takes digital images and overlays one atop the other to make a panorama. With multiple applications of Stitch Panorama, any number of images can be combined into a large panorama. Features include image blending, color balance, and distortion matching. The above image was stitched together from four separate images.
Fast Panorama Stitcher and Blender, implemented in SIMD-Math. PTStitcherNG reads and transforms any number and type of input images, and combines them into one seamless panoramic image with larger field-of-view. Given enough input images, full spherical 360x180 degree views can be synthesized suitable for virtual-reality viewers or printing. Transformation parameters and names of the input images are read from a plain-text projectfile.
Enblend combines images that overlap into a single large image with no seams. Enfuse combines images that overlap into a single image with good exposure and good focus.
