For the busiest and most updated article passing tracker, the X-Spinner is the best choice. It is ranked among the newest article spinning software available in the internet. From the genius of Yi Nan Sun, the owner of WhiteHatBox. Com, it remains among the top-list of most sought beta finder. It has been considered by 
Content Professor is affordable web-based article spinner and PLR articles database that you can try without any investment with the Free membership or you can get the premium membership just for hes dollars per month.