Welcome to ProbOnto - the Ontology and Knowledge Base of Probability Distributions
Version 2.5 is out!

150 uni- and multivariate distributions and alternative parameterisations.
Probability density or mass functions and where available cumulative distribution, 
hazard and survival functions.
Support for encoding of univariate mixture distributions.
228 relationships and re-parameterisation formulas.
Quantities such as mean, median, mode and variance.
Parameter, support/range definitions and distribution type.
Latex and R code for functions.
Model definitions (NEW) and references.