Downloading CATUI 3.0.0.0 from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this software available. The program is included in Office Tools.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The actual developer of the free software is Gutell Lab. The most popular version among the program users is 3.0.
From the developer:
The Comparative Analysis Toolkit User Interface (CATUI) is the second major software component of the software infrastructure being developed by the Gutell Lab to support the Comparative Analysis of large RNA datasets.
The CATUI is an application of the visualization and manipulation of RNA sequences and structures. The CATUI interfaces with the RNA Comparative Analysis Database (rCAD).
You may want to check out more software, such as Serena Prototype Composer 2008 or NAnt-Gui, which might be related to CATUI.