DNAssist is described as 'Provides an intuitive, single interface within which sequence files are displayed, edited and analyzed. The user can customize the display in editor windows by selecting the font, font size, and line length' and is an app. There are more than 10 alternatives to DNAssist for a variety of platforms, including Windows, Mac, Linux, Web-based and Self-Hosted apps. The best DNAssist alternative is BioEdit, which is free. Other great apps like DNAssist are Chromas, Genophore, SnapGene Viewer and Geneious.