Dot supports the output of MUMmer’s nucmer aligner the most commonly used software method for aligning genome assemblies. A quick script called DotPrep.py converts the delta file to a more streamlined coordinates file with an index that enables Dot to read in more alignments in certain regions on demand.

Dot, an interactive viewer for genome-genome comparison

https://dnanexus.github.io/dot/

Address of the bookmark: https://github.com/dnanexus/dot