Reprap Competitors

Are there any reprap competitors or I mean reprap machine that are manufactured by other people something like closed source?. Thanks.

Umm, yes. There are tons of closed source competitors. To name a few:

Makerbot
Solidoodle
PP3DP (Up! printers)
Makibox (whether this is a solid product, an inferior product, or a techno version of a Ponzi scheme is an open question at this point. AFAIK, they haven't shipped a unit yet.)

And there's plenty more. Google 3D printer and see what comes up. Commercial units costing thousands have been around for some time. The recent development in the field has been inexpensive (relatively) printers and DIY printers.

Regards,
aeronaut

I'm writing a paper about 3d printers. Thank you so much for this information.