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Sure there is and lots of them, but they will not allow you the advantage of applying leverage afforded by multi-levels. You can only do so much yourself, but when you have thousands working on your behalf it can magnify that exponentially.
Yes, you can work on freelancing sites like GAF, ScriptLance, oDesk where you can bid on projects and earn money by doing the projects you won. There is no question of making downline.