Chromas

Chromas is a simple program that enables users to view a chromatogram for a particular sequence. It includes a few handy options for all types of users.

The tool can be installed as a portable product on a USB flask or similar device. This way, you can run it on any machine with minimum effort. What's more, the Windows Registry does not get new entries, and files are not kept on the hard disk after program removal.

The interface is not particularly attractive, but easy to navigate. You can open a new file using the file browser only (drag-and-drop is not supported), as long as it has the AVI, AB1, SCF, ESD or RSD format.

Aside from zooming in and out, you can batch export information to other formats (same as the input), and trim it (e.g. limit length, low quality).

It is possible to delete the upstream or downstream, trim vector sequences, set the genetic code (e.g. mycoplasma, spiroplasma), use a search function, customize chromatogram colors, change the font, and others.

The application is not a concern to the computer's overall performance, as it uses very low CPU and RAM. It has a good response time and works well, without causing the OS to hang, crash or pop up error dialogs.  Unfortunately, Chromas has not been updated for a while.