I have just updated my Solidchamfer plugin to R20 and above. It’s free and you can get it here:
(only windows build for now- if anyone wants to add a Mac build that is very welcome!)
Solidchamfer is an edge beveling plugin, and was originally developed back when c4d did not have similar tools. Since R15 the bevel tool in c4d does a similar job in the “Solid” mode. For my own modeling, I’ve found that I still prefer how my plugin handles a lot of corner cases, so I decided to update it to R20.