simpat Links

"Algorithms in C++, Parts 1-4" by Robert Sedgewick (Addison-Wesley textbook)
Tutorial by Stefan Bird
Fast mergeable integer maps by Chris Okasaki and Andrew Gill (1998)
Dave Plonka's Net-Patricia perl extension module, also on CPAN: http://search.cpan.org/dist/Net-Patricia/
Wikipedia:Crit_bit_tree
Optimized IP to ISO3166 Country Code Mapping in C# by Rodrigo Reyes (article on www.codeproject.com)
NIST entry at http://www.nist.gov/dads/HTML/patriciatree.html
PatriciaTrie collection (Java) in Limewire source code -- search 'PatriciaTrie.java' to view code.
py-radix: Radix tree for Python (extension wrapper) by Damien Miller.
libGDS is a library that contains generic Patricia tree C code - by Bruno Quoitin
Haskell Data.IntMap operations