TTA-based Co-design Environment (TCE) is a toolset that provides a complete co-design flow from C programs down to synthesizable VHDL and parallel program binaries. Processor customization points include the register files, function units, supported operations, and the interconnection network.
Minnow is a concurrent programming language with a Ruby-like syntax. It compiles to an executable and uses a companion library to allow fully-rebalanced microthreads. Minnow gains a lot of strength from its actor model, which uses message passing, as opposed to threads and locking, as its concurrency model. Taking a cue from Erlang, actor creation and message passing is extremely lightweight (often on the order of a few nanoseconds). The language has a built-in foreign function interface that allows developers to leverage existing C-based libraries in a simple SWIG-like manner. Minnow's object model is based on "melding" features together to form objects.
nwcc is a C compiler for Unix systems. It targets Linux, Mac OS X, BSD, and Solaris on 80x86 (with nasm and gas), Linux, Mac OS X, and FreeBSD on AMD64 (with yasm and gas), Solaris and Linux on SPARC (64-bit), AIX and Linux on PowerPC (32- and 64-bit), and IRIX on MIPS (64-bit). Cross-compilation is also supported. It doesn't feature any software development support beyond plain compilation.
GODI provides an advanced programming environment for the Objective Caml (O'Caml) language. From INRIA (who created O'Caml) you can get the O'Caml compiler and runtime system, but this is usually not enough to develop applications. You also need libraries, and there are many developers providing them. But it is a lot of work to build and install them. GODI is a system that simplifies this task: It is a framework that automatically builds the O'Caml core system, and additionally installs a growing number of pre-packaged libraries. For a number of reasons, GODI is a source-code based system, and there are no precompiled libraries, but it makes it very simple for everybody to compile them.
RetroWeb is an extension for RetroForth intended to ease the task of creating Web pages. It is still close to HTML, but offers a more compact syntax. Most importantly, it allows you to work with the full power of Forth to generate HTML code. It can be used to create both static HTML files and simple dynamic CGI responses.
U++ is a C++ cross-platform rapid application development suite focused on programmers' productivity without sacrificing runtime performance. Based on strictly deterministic design, it provides a viable alternative to garbage-collected platforms, even for business logic oriented problems.