Downloading KModSim 1.0 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 following version: 1.0 is the most frequently downloaded one by the program users.
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. KModSim is developed for Windows XP/7/8 environment, 32-bit version. This free program was originally developed by CSU. The program belongs to Internet & Network Tools.
From the developer:
MODSIM is a generalized river basin Decision Support System and network flow model developed at Colorado State University designed specifically to meet the growing demands and pressures on river basin managers today.
MODSIM was designed for this highly complex and constantly evolving river basin management environment.
You may want to check out more software, such as HTTP-Tunnel Client, FTPGetter or FTP Commander Deluxe, which might be similar to KModSim.