PTLens 8.9

The program's interface it somewhat non-standard: You choose Directory to load filenames, and the control area at bottom left is usually grayed out unless your lens hasn't been detected. Note the black ragged edges of the photo, a result of geometry correction.

You can simulate a tilt-shift lens, making a shot at an angle appear straight on.

PTLens overcorrected CA in all my tests.

You can manually fix vignetting.

By default, PTLens uses the same chromatic aberration and vignetting settings for subsequent images unless you uncheck that option here. It also doesn't resize images to remove the uneven edges that occur after geometry correction.