The sourceforge page of limitCPU says the following:
> Update: Mr Marletta has re-launched his CPUlimit project, adding new
> features and improving OS X support. The new project is a re-write
> and should not be considered drop-in compatible with this
> project. The source code of the new CPUlimit project can be found on
> github. We here at the LimitCPU project will continue to work with
> downstream projects and with the resurrected CPUlimit project so
> that both projects may grow and improve.