Blocks is a block-oriented graphical programming language. Programming is simply a matter of dragging and dropping blocks. Blocks can be used as an education language, as an extension language for Java applications, or as an autonomous script language.
Ceylon is a new programming language that's deeply influenced by Java, designed by people who are unapologetic fans of Java. It's a language designed specifically for writing large programs in teams.
Cibyl is a programming environment that allows compiled C programs to execute on J2ME-capable phones. Cibyl uses GCC to compile the C programs to MIPS binaries, and these are then recompiled into Java bytecode.
a deductive logic solver with many of the characteristics of a programming language. It is designed to be embedded inside a parent program or used from the command line
CTAL_0 is a strictly typed assembly language that is intended to be used as a target language into which C programs are compiled. The project contains a type-checker for CTAL_0 and an experimental C compiler that generates CTAL_0 assembly code.
Gleam is a simple Scheme language interpreter. Its goals are to support the discovery of Scheme for beginners, simplicity, R5RS compliance, and full integration with the Java platform (with the ability to call Java code from Scheme and vice versa).
Hecl Programming Language
A command-based scripting language for Java with a small core that is easily extended in Java, and an extremely flexible syntax which makes it easy to create domain-specific scripting environments.
JActor is a Java Actor implementation which can send 85 million messages per second on an i5.
Java Unified Expression Language
JUEL (Java Unified Expression Language) is an implementation of the unified expression language (EL) as specified by the JSP 2.1 standard (JSR-245).
JELAN provides facilities for constructing and invoking LL language lexical analyzers and parsers. These are embedded in the sense that a language can be specified and then used for textual analysis within the same Java program. This avoids the need for a separate generation phase to write and compile a lexical analyzer and parser from the language specification.
JFCML is a markup language for Java, which specifically targets the creation of AWT/Swing Graphical User Interfaces. More formally, JFCML is an XML User interface Language (XUL) for Java. JFCML has been designed to be easy to use, yet powerful enough to write a complete application. Using JFCML, it is possible to construct a complete, running Java application; without writing a single line of Java code.
JFXtras is a package of add-ons and utilities for the JavaFX scripting language that fills in gaps that application developers need.
Jif (Java + information flow) is a security-typed programming language that extends Java with support for information flow control and access control, both at compile time and at run time. Static information flow control can protect the confidentiality and integrity of information manipulated by computing systems. The compiler tracks the correspondence between information the policies that restrict its use, enforcing security properties end-to-end within the system. After checking information flow within Jif programs, the Jif compiler translates them to Java programs and uses an ordinary Java compiler to produce secure executable programs.
JTcl is an implementation of Tcl (Tool Command Language) written in Java that implements a large extent of Tcl 8.4 syntax and commands.
"Project Kotlin" is the codename for a statically-typed JVM-targeted programming language developed by JetBrains and intended for industrial use.
LASIC is a language that facilitates creating and managing systems in a cloud environment. It allows you to create scripts that describe a system, its components, and the relationship between those components using a declarative syntax.
ngrease is a simple metalanguage for defining new concepts easily on any level. It can define analysis, requirements, design and implementation (in any programming language), and transformations to produce lower level concepts (working software) from higher level concepts.
Obol is a specialized high-level programming language for security protocols. The idea is to program closer to the abstractions used to describe and analyze security protocols, and leave all the nasty details to the language's runtime.
a structured text format for representing graphs of information. Its grammar is very simple allowing for very compact parsers. It is specially usefull for configuration files
OpenSAML is a portable implementation of the Security Assertion Markup Language (SAML) standard for the formation and exchange of authentication, attribute, and authorization data using XML, as defined by OASIS. There are interfaces for a range of languages, including C++ and Java.
a unique two-dimensional programming language. The purpose of this project is to define a standard for the new language and document it, as well as create a Java-based interpreter for it
an implementation in Java of standard Prolog, but with extensions for handling the Conceptual Graph theory
Stab is a multi-paradigm, type-safe programming language. It will be familiar to Java and C# programmers.
Stencil is a template language with a concise syntax and advanced capabilities. It is written in Java and has an easy and advanced API that makes integrating it into any environment a breeze.
The Complex Language
The Complex language is an object oriented programming language intended for scripting or rapid prototyping of applications. The design goals were to have very few simple but powerful concepts and to be easy to use and easy to learn.
The Frink Language
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 handles conversions between time zones, currencies, and historical values of the U.S. dollar and sterling, translates between several languages, does date/time maths, and more.
The Sleep Scripting Project
The Sleep Scripting Project is a Perl inspired embed-able scripting language for Java applications. The main goals of sleep are easy to learn, easy to use, and easy to integrate.
V is a concatenative (stack oriented) programming language. It is a close relative of PostScript and Forth. It is currently implemented over the JVM platform.
The Virgil Programming Language is designed for building robust, flexible, and scalable software systems on embedded hardware platforms such as microcontrollers. Virgil builds on ideas from object-oriented, statically typed languages like Java, providing a clean, consistent source language. Its compiler system provides an efficient implementation for resource-constrained environments.
WadC is a programming language (formally, a normal-order evaluated functional language) for the construction of Doom maps. Think of it like Logo on steroids, with demons and shotguns.
Whiley is a hybrid object-oriented and functional programming language. Whiley employs extended static checking to eliminate errors at compile time, including divide-by-zero, array out-of-bounds and null dereference errors.
The Wyjec is a general-purpose expression language with simple prefix notation. It's also a name of pure-Java implementation of the language, that can be embedded in various Java applications and customised for their specific needs. Wyjec is Free Software so you can read, modify and redistribute its source code, as long as you conform to its license requirements.
a XQL (XML Query Language) implementation in Java. It consists of an engine which executes queries upon a XML file and can be accessed both programatically and in command line mode
Xtempore is a lightweight, modular and powerful XML-based domain independent templating language and toolset implemented in Java.