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
Mendelgen - Plasmid editing simplified. Quickly optimize codons, align sequences, simulate digestions, and more.
UGENE - UGENE is free open-source cross-platform bioinformatics software
Chromas - Two software applications are available from Technelysium: Chromas and ChromasPro.
DNADynamo - DNA analysis, cloning and sequencing software