BioEdit - Biological sequence alignment editor
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.
UGENE - UGENE is free open-source cross-platform bioinformatics software
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
Genophore - Genophore is an application for searching and designing proteins. It also provides a suite of bioinformatics utilities.