PH7 is an in-process software library that implements a highly-efficient embeddable bytecode compiler and a virtual machine for the PHP programming language. It implements most PHP 5.3 constructs, including heredoc, nowdoc, gotos, classes, anonymous functions, and closures, along with powerful extensions such as function overloading, comma expressions, full type hinting, string comparison operators, and more. It is the ideal library for enhancing your application or device (such as router or set-top box) with dynamic Web interfaces, with the benefits and power of PHP and without the overhead incurred by process creation. As an embedded interpreter, it allows multiple interpreter states to coexist in the same program, without any interference between them.
foma is a compiler, programming language, and C library for constructing finite-state automata and transducers for various uses. It has specific support for many natural language processing applications such as producing morphological analyzers. Although NLP applications are probably the main use of foma, it is sufficiently generic to use for a large number of purposes. It comes with an xfst-compatible interface and regular expression language. The library contains efficient implementations of all classical automata/transducer algorithms: determinization, minimization, epsilon-removal, composition, and boolean operations. More advanced construction methods are also available: context restriction, quotients, first-order regular logic, transducers from replacement rules, etc.
libdwarf is a library and command line tool for manipulating DWARF data in ELF object files. The DWARF Debugging Information Format is of interest to programmers working on compilers and debuggers. All libdwarf distributions contain C source, the DWARF2 specification, and libdwarf specifications. Implementors often extend DWARF by adding new attributes and other things.
Eero is a binary-compatible variant of Objective-C 2.0, implemented with a patched version of the Clang/LLVM compiler. It features a streamlined syntax with improved readability and reduced code clutter, as well as new features such as Python-like indentation and a limited form of operator overloading. It is inspired by languages such as Smalltalk and Ruby.