I'm not familiar with Program AB, but Bot Libre does support AIML.
For AIML see,
https://www.botlibre.com/manual-aiml.jsp
https://www.botlibre.com/forum-post?id=28654
Bot Libre also supports response lists, Self scripting, and Regular Expressions,
https://www.botlibre.com/manual-responselist.jsp
https://www.botlibre.com/forum-post?id=483549
https://www.botlibre.com/manual-self.jsp
https://www.botlibre.com/manual-regex.jsp
