Nitra is a language workbench. You can use Nitra for the creation or extend a general-purpose programming language or a domain-specific language (DSL). At present Nitra allows you to create dynamically expanding parsers. In the future, Nitra will allow to create full support for programming languages: compilers, IDE support.
Licence — BSD 3-Clause License
Install — instructions to setup environment.
Build — building Nitra project from sources.
Example — string calculator example