1)   Flatland 1.0
Flatland, A Romance of Many Dimensions. As the author puts it, the stuff that dreams are made of. This highly imaginative book has been very influential. It is now available totally free in a high quality PDF format with the original drawings.

 2)   Block-IT! 1.1
Convert 3D models into BLOCK format blocks for building 3D website environments in 3DML. Full version of Block-IT! features UV mapping, block optimisation for file size economy and a help file showing the basics of block creation via Metasequoia©