BioEdit - Biological sequence alignment editor

UGENE - UGENE is free open-source cross-platform bioinformatics software

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.

DNADynamo - DNA analysis, cloning and sequencing software

4peaks - 4Peaks - For Peaks, Four Peaks.

Genophore - Genophore is an application for searching and designing proteins. It also provides a suite of bioinformatics utilities.