Hello. Now in Boost. Algorithm there are 3 algorithms for searching: Knuth-Morris-Prata, Boyer-Moore, Boyer-Moore-Horspool. They are good algorithms, but there are other efficient algorithms like Turbo-Boyer-Moore, Quick Search, etc. You can find some more here: http://www-igm.univ-mlv.fr/~lecroq/string/index.html Now i am working on new search algorithms for Boost.Algorithm. Maybe are there anybody,who familiar with string search algorithms? --  Best regards, Alexander Zaitsev