SnapGene Viewer - SnapGene offers the fastest and easiest way to plan, visualize, and document DNA cloning and PCR. You can easily annotate features and design primers.
BioEdit - Biological sequence alignment editor
UGENE - UGENE is free open-source cross-platform bioinformatics software
Geneious - Geneious combines all the major DNA and protein sequence analysis tools into one revolutionary...
DNADynamo - DNA analysis, cloning and sequencing software
Open Vector Editor Electron - A simple file based genbank/fasta file viewer and editor. Works with mac/windows/linux