Ch is an embeddable C/C++ interpreter for cross-platform scripting, shell programming, 2D/3D plotting, numerical computing, and embedded scripting. It is the simplest solution to numerical computing and visualization in the domain of C/C++. It supports the ISO 1990 C Standard (C90), major features in C99 (complex numbers, variable length arrays or VLAs, type generic functions, long long data type, etc), classes in C++, and extensions to the C language like nested functions, string types, etc. It can be embedded in other applications and hardware and used as a scripting language. C/C++ code is interpreted directly with no compilation to intermediate code. It supports Linux, Windows, MacOS X, Solaris, HP-UX, and FreeBSD.
execline is a very light, non-interactive scripting language, which is similar to a shell. Simple shell scripts can be easily rewritten in the execline language, improving performance and memory usage. execline was designed for use in embedded systems, but works on most Unix flavors.
posh is a stripped-down version of pdksh with several improvements that aims for compliance with Debian's /bin/sh policy, and few extra features. Currently, Debian's policy is to adhere to POSIX with the exception of supporting 'echo -n', so posh strives toward compliance with SUSv3 (with the exception of 'echo -n').
RACE (Riverwatcher Active Content Environment) is a tag-based Web scripting language designed for simplicity and integration with HTML. It is available as an Apache module, CGI executable, or commandline interface for shell scripting, and supports MySQL, MSQL, and any ODBC data source.
eltclsh (editline Tcl shell) is an interactive shell for the Tcl programming language. It provides command line editing, history browsing, and variables and command completion thanks to editline features. The completion engine is programmable in a way similar to tcsh, and comes with built in completion for the entire Tcl language by default. The package also provides elwish, an interactive interpreter for the Tk toolkit. You need the editline library in order to compile eltclsh.
FrAid (Fr[actal] Aid) is a programming language that is appropriate for mathematical computations, visualization, batch processing, and more. It features both a standalone application that provides a programming environment for the language and a system for integrating the language with Java. The Java interface allows mathematical equations and formulas to be used with Java code, making it easier to process numerical computations, symbolic computations, imaging, CAD, and more.