If you have found this specific file (wsrp-on-top.rar) on a public forum, discord, or unofficial download site, please exercise caution: Web Services for Remote Portlets Specification v2.0
: This is a proprietary compressed archive format developed by Eugene Roshal. Files ending in .rar must be extracted using tools like WinRAR or WinZip . Safety Warning
: Stands for Web Services for Remote Portlets. This protocol allows portal servers to provide "portlets" (UI components) as web services that other "consumer" portals can plug in without custom programming.