text: Q:
  
  Classification datasets with categorical features and a lot of classes
  
  As stated in the title I would like to find some classification datasets with $c \ge 5$ classes and one categorical feature or more. It is even fine if there are some continuous features but I would like at least a categorical one.
  I have some genetic datasets where features take values in $\{ G, T, A, C\}$ but unfortunately the class is binary.
  I have a method that should improve the accuracy performance on those dataset. I used some of UCI datasets but I need more of them to show a significant $p$-value that states the improvement of performances.
  
  A:
  
  Check out the UCI ML repository http://archive.ics.uci.edu/ml/ 
  It has more than 150 data sets for various classification tasks and serves as a well accepted collection of datasets for benchmarkng new methods. I'm sure you'll find a multiclass response data set with categorical predictors.
  Edit: I'm sure you know, but let me just mention that if you have predictors with 5 or more classes nothing prohibits to take a predictor as the target. 
  
  