Two packages are currently available on CRAN:

• bpnreg by Jolien Cremers
• circglmbayes by Kees Mulder

Both packages use Bayesian methods. These packages should be easy to use for anyone able to work with R and include a reference manual and example data sets. For bpnreg an additional tutorial is available in Frontiers in Psychology.

More R packages for circular data are developed (or under development) and can be found on the GitHub page of Kees Mulder.