The 0.6.5 version of RKWard for Mac is provided as a free download on our website. RKWard for Mac lies within Developer Tools, more precisely IDE. The actual developer of this free software for Mac is RKWard.
From the developer:
RKWard is an easy-to-use and easily extensible IDE/GUI for R. It aims to combine the power of the R-language with the ease of use of commercial statistics tools. The program's features include: spreadsheet-like data editor, syntax highlighting, code folding and code completion, data import, plot preview and browsable history, R package management, and more.
You may want to check out more software for Mac, such as Objective Basic, PowerGlot or EcoLab, which might be related to RKWard.