What are some alternatives?
When comparing ApE - A plasmid Editor and SnapGene Viewer, you can also consider the following products
Geneious - Geneious combines all the major DNA and protein sequence analysis tools into one revolutionary...
BioEdit - Biological sequence alignment editor
DNADynamo - DNA analysis, cloning and sequencing software
Vector NTI - Vector NTI is a bioinformatics software package. The current versions are v11.5.
Genome Compiler - Genome Compiler is an all-in-one free software platform for biologists. You can intuitively visualize & design DNA, import, manage and share your data.
UGENE - UGENE is free open-source cross-platform bioinformatics software