PS3 jailbreaking doesn’t end here! There are more and more tools coming out every week to jailbreak PS3. Some are paid ones, like PS Jailbreak, as well as free solutions for PS3 jailbreak are also available (Read: How to Jailbreak PS3 with Nexus One).
PS3Key is another and cheaper solution to jailbreak PS3 running on the firmware 3.41. This jailbreak is same as the PS Jailbreak and requires you to purchase the USB mod chip.