Currently there are two versions of ProB available for Rodin.
The first one is based on the old Java API and supports Rodin 2.8 and Rodin 3.3. The update site comes built in into Rodin, see the tutorial on installing ProB for Rodin. Nightly releases of this versions are also available on the Download page.
The second, still experimental, one is based on the new ProB Java API (aka ProB 2.0). Because the UI components provided by the ProB Java API are based on web technologies, we were able create a simple plugin for the Rodin 3 tool that provides the user with all of the functionality of ProB within Rodin. The plugin uses views with embedded Eclipse SWT browsers to access the user interface components that are shipped with the ProB Java API library. Details about nightly releases of this versions is also available on the Download page.
There is now also a Multi-Simulation Plug-in available for Rodin. It enables discrete/continuous co-simulation.
This Plug-in is available at the update site http://nightly.cobra.cs.uni-duesseldorf.de/rodin_provereval/ and is capable to evaluate a variety of provers or tactics on a selection of proof obligations.
We also develop the Camille text-editor for Rodin. A preliminary version of Camille for Rodin 3.3 is available at the nightly update site: http://nightly.cobra.cs.uni-duesseldorf.de/camille/. The regular update site (http://www.stups.uni-duesseldorf.de/camille_updates) is preconfigured within Rodin. More information can be found on the Camille site at event-b.org.