I have written the "Very Simple" ic50.org and ic50.tk websites, i.e. the IC50, Km Vmax, multi-IC50 and multi-Km Vmax toolkits, a probability tree drawing tool (ic50.org/probabilitree), a CIF to PDB file converter for (ic50.org/ciftopdb), a fractional to orthogonal coordinate converter (ic50.org/fractorth), a parametric coil drawing tool (ic50.org/crystalcurls) and some 2D Voronoi polyhedra animation tools (ic50.org/voronoi.html, ic50.org/voronoia.html, ic50.org/voronoid.html and ic50.org/voronoi_vexer.html), the Michaelis-Menten Plotly tool (ic50.org/kmvmaxly) & an electron density web viewer for mobiles (minimapai.de). Some sketchy watercolours of mine can be found at the link below. If you find something useful here, any contributions towards server and domain name costs are much appreciated. Alternatively feel free to donate something to the RSPCA or other animal charity.