As per our knowledge there are 3 tools available
1. BP-3 Neeches - Software as a service application
2. IDA - IBM Deployment accelerator besides having automated testing capabilities has a CodeStyle feature which checks for about 80 rules, in house stand alone application which pulls snspahots from a process Center.
3. Dosvak Code Analyzer - Our own tool which is just released with 180+ customizable rules along with service and process diagrams to pinpoint the issue. Provided as a Process Application which you can self host on your Process Center or Process Server, unlimited usages.
Live Demo available at Product Page
4. salient Process is building a twx analyzer but is currently more of a structure analysis rather that static analysis agains errors and best practices