PalindromicPrimeFinder is a little "toy" program that can find relatively big (e.g. 1000-2000 digits) palindromic probable prime (PRP) numbers. It generates random palindromic numbers and tests them for primality using a probabilistic algorithm. It is multi-threaded and stops after a certain timeout (if no palindromic primes are found).
Ruzzle Solver PRO is an offline solver (aka cheater) for Ruzzle puzzles. It aims to be usable, fast, and easy to extend and improve for both users and developers thanks to a sensible and modular design. It allows you to add, replace, or update the dictionaries and the score tables, thus supporting an arbitrary number of languages.