"The stock parameter loader is a huge pain for many users and offers very little power when dealing with large sets of parameters. This tool allows you to load multiple parameters at once. You can also visualize the parameters in their group associations as well as their data types. The CASE subscription version for this tool supports filtering as well as adding new parameters to the file from either parameters that exist in the current model or from user entry.
"Installation is handled from within the CASE Add-In Manager!"
Update 5/8/2016: CASE and the CASE Apps website are no more but, courtesy of WeWork, the CASE Apps are now open source. They may be accessed on GitHub.