I am the author of the cpm R package which implements various change point models for sequential change detection, using both parametric and nonparametric methods. The package can be downloaded here, along with the associated manual.

I have also written the bayesianETAS R package which implements Bayesian inference for the Epidemic Type Aftershock Model for earthquake occurrences. This package can be downloaded here. The paper which this work is based on is Bayesian Estimation of the ETAS Model for Earthquake Occurrences.