More than 4 years ago Johan Commelin and I created superficie algebriche, an interactive visualisation of the Enriques–Kodaira classification of minimal smooth algebraic surfaces (see the blog post). I'm visiting Johan in Freiburg at the moment, and we've just now

• added more surfaces (today we've added surfaces with $\mathrm{p}_{\mathrm{g}}=\mathrm{q}=3$ and $\mathrm{p}_{\mathrm{g}}=\mathrm{q}=2$, over the past years we've added various others)