GPP is a general-purpose preprocessor with customizable syntax, suitable for a wide range of preprocessing tasks. Its independence from any programming language makes it much more versatile than cpp, while its syntax is lighter and more flexible than that of m4. The syntax is fully customizable, which makes it possible to process text files, HTML, or source code equally efficiently in a variety of languages.
EmPy is a system for embedding Python expressions and statements in template text. It takes an EmPy source file, processes it, and produces output. This is accomplished via expansions, which are special signals to the EmPy system and are set off by a special prefix (by default the at sign, '@'). It can expand arbitrary Python expressions and statements in this way, as well as a variety of special forms. Textual data not explicitly delimited in this way is sent unaffected to the output, allowing Python to be used in effect as a markup language. Also supported are callbacks via hooks, recording and playback via diversions, and dynamic, chainable filters. The system is highly configurable via command line options and embedded commands.
Barter is a tool for increasing the quality of applications written in Java. It allows the programmer to use design by contract and define other development aspects right in the classes and interfaces where they are relevant, as JavaDoc comments. It is essentially a code generator for AspectJ, implemented as an xDoclet task.
Dia2Postgres is a Perl script that can be used to convert Dia diagrams into PostgreSQL scripts or PHP mirror classes which can add, update, and modify table entries automatically. It has support for inheritance, simple references (limited to a single field), and a fake enum type which creates a table.
Hat (Haskell Tracer) is a tracing and debugging system for Haskell that can be used for comprehending working programs, and debugging an incorrect one. It consists of hat-trans, which transforms a program into one that traces itself using your normal compiler and a runtime library, and a set of browsing tools that explore the trace after execution of the program has completed.
Generally, mod_ocaml is a flexible apache module for use of INRIA's powerful OCAML interpreter as a Web scripting language (with functional and imperative features). Simply embed OCAML code between HTML on your pages, like you do with PHP, mod_perl, etc. After modifying some settings, you can use almost any interpreter for providing dynamic content on your HTML pages.
Stunnix Perl-Obfus is a unique solution for protecting your valuable intellectual property from possible Perl source code piracy/studying/rework. It's an advanced and extremely reliable obfuscator for the Perl source code. It converts the Perl source files (.pl and .pm) into highly mangled and obfuscated forms, making them extremely difficult to study, analyse, reuse, or re-work for competitors or customers, while fully retaining functionality of the original source code. It's not a compiler to machine code, and the obfuscated form will still be the usual Perl source code, and so will work on all platforms the original source worked on.
Preprocess allows you to write unit-style single-source-file C or C++ modules, from which it generates header and implementation files. It automates tasks such as declaring new functions or methods in the header file, putting modifiers like "inline", "virtual", "static", "explicit" in the right place (header or implementation file), and putting inline files into the header file in the correct order. Also, for debugging or profiling builds, Preprocess can optionally generate all inline functions out-of-line.