RPilot is an interpreter for the IEEE-standard programming language PILOT written in portable C. PILOT is a language that was designed in the 1960's to support computer-aided instruction and is very simple to learn. RPilot comes with an introduction to the language and several examples.
Quila (from Portuguese: "Quila é um Interpretador para Linguagem Algoritmica") is an interpreter for a simple Pascal-like programming language whose keywords and command names are all in Portuguese. It can help novice programmers that speak Portuguese to learn computer programming, because it is easier to learn than a programming language with English keywords and command names.
EAsea Specification of Evolutionary Algorithms (EASEA), is a high-level language dedicated to the specification of evolutionary algorithms. The language and compiler are quite mature. EASEA compiles .ez specification files into C++ or Java object files, using existing evolutionary libraries. Supported C++ libraries currently are GALib or EO.
Chump is a table-driven assembler and dissembler with a very fast new architecture input format. Both the assembler and disassembler are created using a single description. It comes with descriptions for ARM, MIPS, Stump, and 6809. It is intended for use as a library compiled with other programs to allow line assembly and disassembly.
Brainfuck Debugger is designed to encourage the development of Brainfuck programs by providing an IDE with debugging features. One of the goals of this project is to provide an environment for people who want to experiment with the fundimental processes of computers, but not get blown away with complicated syntax issues.
Loro is an open system intended to help beginners learn programming. It uses its own programming language and includes an integrated development environment system focused on first-year students. The language features a "specify, then implement" methodology; you have to specify a task before writing any implementation (algorithm). Specification is an explict, compilable construction to make a contract between suppliers and clients, and can be implemented in either Loro or Java (via BeanShell). The IDE features support for test-driven developing, syntax highlighting, and automatic HTML documentation generation and visualization.
Frink is a calculating tool and programming language designed to help you in the real world. It tracks units of measurement throughout all calculations and ensures that answers are correct. It converts between systems of measurement, and has a huge library of physical data. It is both a simple calculator for quick calculations and a full-fledged programming language for large tasks. It draws high-quality graphics, handles conversions between time zones, currencies, and historical values of the U.S. dollar and the British pound, translates between several languages, does date/time math, and more.