JTCL

If you're someone who works with natural language processing or language guessing, JTCL is a Java library that you might find useful. It's actually a pure Java implementation of libTextCat, a library that was specifically designed for language guessing. In fact, this is one task on which the library is known to perform with near-perfect accuracy.

One of the biggest advantages of JTCL is that it's written in Java, which means that it can be used with almost any system that supports the language. Additionally, the library is known to support a wide range of different languages, including Norwegian, Polish, Danish, Dutch, Albanian, English, Finnish, Hungarian, Italian, Slovakian, Slovenian, Spanish, Swedish, French, and German.

Overall, if you're looking for a reliable language guessing library that's easy to use and works across multiple systems, JTCL might be just what you need. It's worth noting that the library does require a Java environment to run, but this shouldn't be a problem for most developers who are already working with Java-based systems. Additionally, the fact that JTCL is an implementation of libTextCat means that you can be confident that it's based on a well-tested and mature codebase.