I run a small office and we have three high-end iMac's, custom configured and ordered from apple with overclocked processors.

They sit here all night long, off and collecting dust.

Is there an online mining app or a downloadable app that will allow me to chain these three Macs together and have a minuscule mining platform?

Electricity for me is absolutely free, with 45 Sunpower panels on my roof.

Thanks to all for any guidance or suggestions,

Michael