Use old iMac G5 as external Mavericks-style display I currently have a Mid-2010 iMac (Intel i3 3.06 GHz) running OS X 10.11 "El Capitan" and a really old 17-inch Mid-2005 iMac G5 (PowerPC G5 2GHz) running OS X 10.4.11 "Tiger".

I would like to know if there is any free (if it is software only; cables and stuff are fine) way to convert the old iMac G5 into an external monitor for the newer Intel iMac with the multiple display support introduced in Mavericks (not just mirroring).

Any advice?
What do you think of Screen Recycler?