BioEdit - Biological sequence alignment editor
TreeView - Tree drawing software for Apple Macintosh and Windows.
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.
FigTree - FigTree is designed as a graphical viewer of phylogenetic trees
DNADynamo - DNA analysis, cloning and sequencing software
UGENE - UGENE is free open-source cross-platform bioinformatics software