What program would allow me to crop using a grid?

[Morgan_Hardwood]

…or you could automatically align them and crop them using Hugin:

Aligning Images with Hugin

 Aligning Images with Hugin Easily process your bracketed exposures Hugin is an excellent tool for for aligning and stitching images. In this article, we’ll focus on aligning a stack of images. Aligning a stack of images can be useful for achieving several results, such as: bracketed exposures to make an HDR or fused exposure (using enfuse/enblend), or manually blending the images together in an i…