3DPB: A Silk Wiki about more than a hundred different 3D printers

There are hundreds of 3D printers for sale, from DYI models for about 200 Euros to production monsters costing tens of thousands of Euros. 3DPB gives an overview of 121 of them, including prices, comparisons of layer thickness, maximum object sizes and other important characteristics.
You need a Silk account to be able to view 3DPB. Silk is an online tool for presenting data. A Silk account will allow you to add and change any information on the 3DPB page. Difference with Wikipedia is that this cannot be done anonymously, preventing unjust manipulation of data.