| Clojure | Dynamic language known for its expressiveness and concurrent processing capabilities. |
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| Datalevin | A simple, fast and versatile Datalog database. |
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| Eiffel | Object-oriented programming language emphasizing design by contract. |
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| Elvish | Versatile scripting language and interactive shell with cross-platform binary support. |
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| JRuby | Java-based implementation of Ruby, integrating closely with Java for two-way access. |
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| KornShell | Unix-based shell that combines features from C and Bourne shells, supporting POSIX standards. |
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| Rascal | Domain-specific language for metaprogramming and implementing domain-specific languages. |
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