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The Gambit programming system is a full implementation of the Scheme language which conforms to the R4RS and IEEE Scheme standards. It consists of two main programs: gsi-gambit, the Gambit Scheme interpreter, and gsc-gambit, the Gambit Scheme compiler. Gambit-C is a version of the Gambit programming system in which the compiler generates portable C code, making the whole Gambit-C system and the programs compiled with it easily portable to many computer architectures for which a C compiler is available. With appropriate declarations in the source code the executable programs generated by the compiler run roughly as fast as equivalent C programs.

Rhino is an open-source implementation of JavaScript written entirely in Java. It is typically embedded into Java applications to provide scripting to end users. Rhino is an implementation of the core language only and doesn't contain objects or methods for manipulating HTML documents. Rhino contains * All the features of JavaScript 1.6 * Allows direct scripting of Java * A JavaScript shell for executing JavaScript scripts * A JavaScript compiler to transform JavaScript source files into Java class files * A JavaScript debugger for scripts executed with Rhino

Rubinius is an implementation of the Ruby programming language. The Rubinius bytecode virtual machine is written in C++, incorporating LLVM to compile bytecode to machine code at runtime. The bytecode compiler and vast majority of the core classes are written in pure Ruby. To interact with the rest of the system, the VM provides primitives which can be attached to methods and invoked. Additionally, FFI provides a direct call path to most C functions. Rubinius uses a precise, compacting, generational garbage collector. It includes a compatible C-API for C extensions written for the standard Ruby interpreter (often referred to as MRI Matz's Ruby Implementation).

This is a free port of the original SIL (SNOBOL4 Implementation Language) macro version of SNOBOL4 (developed at Bell Labs) with the C language as target. SNOBOL4, while known primarily as a string language excels at any task involving symbolic manipulations. It provides run time typing, garbage collection, user data types, on the fly compilation. Its primary weakness is its simple syntax, and lack of "structured programming" constructs. However some consider the spareness of SNOBOL4 syntax a strength when compared to some "modern" agglomerations such as perl.

Squirrel is a high level imperative/OO programming language, designed to be a powerful scripting tool that fits in the size, memory bandwidth, and real-time requirements of applications like games. However Squirrel offers a wide range of features like dynamic typing, delegation, classes & inheritance, higher order functions, generators, coroutines, tail recursion, exception handling, automatic memory management, weak references, etc. Squirrel is inspired by languages like Python, Javascript and especially Lua. The API is very similar and the table code is based on the Lua one.

Vala is a new programming language that aims to bring modern programming language features to GNOME developers without imposing any additional runtime requirements and without using a different ABI compared to applications and libraries written in C. valac, the Vala compiler, is a self-hosting compiler that translates Vala source code into C source and header files. It uses the GObject type system to create classes and interfaces declared in the Vala source code. It's also planned to generate GIDL files when gobject- introspection is ready.

tinypy is a minimalist implementation of python in 64k of code it includes a whole heap of features: * parser and bytecode compiler written in tinypy * fully bootstrapped * luaesque virtual machine with garbage collection written in C it's "stackless" sans any "stackless" features * cross-platform :) it runs under Windows / Linux / OS X * a fairly decent subset of python o classes and single inheritance o functions with variable or keyword arguments o strings, lists, dicts, numbers o modules, list comprehensions o exceptions with full traceback o some builtins * batteries not included -- yet

The amavis-logwatch(1) utility is an Amavisd-new log parser that produces summaries, details, and statistics regarding the operation of Amavisd-new (henceforth, simply called Amavis). A key feature of amavis-logwatch is its ability to produce a very wide range of reports with data grouped and sorted as much as possible to reduce noise and highlight patterns. Brief summary reports provide a quick overview of general Amavis operations and message delivery, calling out warnings that may require attention. Detailed reports provide easy to scan, hierarchically-arranged and organized information, with as much or little detail as desired.

Heirloom mailx (formerly known as "nail") is derived from Berkeley Mail and provides the functionality of the System V and POSIX mailx commands. Additional features include support for MIME, IMAP (including caching and disconnected use), POP3, SMTP, S/MIME, international character sets, maildir folders, message threading, powerful search methods, scoring, and a Bayesian junk mail filter. Mailx can be used as a mail batch language in nearly the same way as it is used interactively. It can thus act as a mailbox filter, can fetch mail from remote accounts, and can send files as attachments.

The OSSP lmtp2nntp program is an LMTP service for use in conjunction with an MTA (like Sendmail), providing a reli- able real-time mail to news gateway. Input messages get their headers slightly reformatted to match Usenet news article format. The article is then posted or feeded into a remote NNTP service (like INN). Delivery must take place immediately or the transaction fails. OSSP lmtp2nntp relies on the queuing capabilities of the MTA in order to provide a fully reliable service. For this the program returns proper delivery status notification which indi- cates successful completed action, persistent transient failure or permanent failure.