Free java ahead of time compiler software for linux

JavaNativeCompiler (JNC) is a Java to native compiler. The project allows AOT (ahead of time) compilation of your Java applications. With JNC, you can create real standalone native binaries (.exe on Windows) which will no longer depend on a JRE.
This is especially useful when applications have to be deployed to end-users. All vexatious problems of deploying Java applications can be solved by compiling them to native. They will be:
- Easy to deploy
No JRE dependency. Most end-users dont know what they have installed.
No more problems on how to create an executable file out of a JAR or class file.
- Hard to decompile
Java can easily be decompiled. Native compilation will protect your source code.
- Run fast from the start
No more overhead for loading a JRE.
Enhancements:
- This release fixes a couple of problems with AWT/Swing and XML.
- It also once again contains a version for Linux.
- The compiler binary downloads are smaller.

Obfuscated Tiny C Compiler (OTCC) is a very small C compiler I wrote in order to win the International Obfuscated C Code Contest (IOCCC) in 2002.

My goal was to write the smallest C compiler which is able to compile itself. I choose a subset of C which was general enough to write a small C compiler. Then I extended the C subset until I reached the maximum size authorized by the contest: 2048 bytes of C source excluding the ;, {, } and space characters.

I choose to generate i386 code. The original OTCC code could only run on i386 Linux because it relied on endianness and unaligned access. It generated the program in memory and launched it directly. External symbols were resolved with dlsym().

In order to have a portable version of OTCC, I made a variant called OTCCELF. It is only a little larger than OTCC, but it generates directly a dynamically linked i386 ELF executable from a C source without relying on any binutils tools! OTCCELF was tested succesfully on i386 Linux and on Sparc Solaris.

NOTE: My other project TinyCC which is a fully featured ISOC99 C compiler was written by starting from the source code of OTCC !

Compilation:

gcc -O2 otcc.c -o otcc -ldl
gcc -O2 otccelf.c -o otccelf

Self-compilation:

./otccelf otccelf.c otccelf1

ObjectBox is a free, opensource o:XML compiler and interpretor written entirely in Java. ObjectBox o:XML Compiler implements The o:XML Programming Language specification, and provides a complete compilation and runtime environment.
Main features:
- Java extensions - o:XML procedure that converts any Java class/object to an o:XML type for seamless language integration, making existing Java classes instantly available for instantiation and subtyping as any other o:XML type.
- Java Servlet support for deployment in J2EE environments.
- Caching of compiled programs allowing threadsafe concurrent execution.
- Commandline executable that passes arguments to o:XML program.
- Java Ant task for powerful content generation and integration in XML publishing systems.
Before compilation the program file is parsed and validated for well-formedness. The result of compiling a program is an object hierarchy of actions, that will produce the program result as a sequential output to either a DOM tree, output stream or a SAX content handler.
In order to obtain a complete and fully valid XML document, the program must terminate successfully. However all o:XML programs dont necessarily terminate - see the Fibonacci Series for an example of a program that generates an infinite, unbroken XML stream.
A compiled o:XML program contains all parsed o:Path expressions and XML-generating objects. It is thread-safe and can execute concurrently in different runtime environments, producing output to different result handlers. The program in its compiled form is independent of the XML file it was generated from as well as the physical form of its output.
Version restrictions:
- Access Specifiers (public/private/protected) not fully implemented
- Context Node probably not always correct
Enhancements:
- Integration with the Spring 2.0 framework.
- Allows for the creation of o:XML beans in Spring 2.0.
- Full integration with support for XML schema configuration, and the ability to mix and match beans: o:XML, Java, JRuby, Groovy, Beanshell, etc.

Java Neural Network Trainer is a neural network trainer with the ability to easily add new training algorithms and training patterns.

Java Neural Network Trainer project includes a parallel training graphical interface where you can view each trainer working in real-time in parallel.

4tH is a Forth compiler with a little difference. Instead of the standard Forth engine it features a conventional compiler.
4tH is a very small compiler that can create bytecode, C-embeddable bytecode, standalone executables, but also works fine as a scripting language. It supports over 85% of the ANS Forth CORE wordset and features conditional compilation, pipes, files, assertions, forward declarations, recursion, include files, etc.
It comes with an RPN calculator, line editor, compiler, decompiler, C-source generators, and a virtual machine.
Enhancements:
- More CORE words and most of the DOUBLE wordset are supported.
- Output buffers can be flushed.
- An experimental multitasking environment was added.

Intel C++ Compiler application is a full fledged C/C++ compiler and debugger suite. Its aim is to provide outstanding performance for all Intel 32-bit and 64-bit processors, while not requiring the need for porting applications from other compilers.

It provides optimization technology, threaded application support, and features to take advantage of Hyper-Threading technology. It is substantially source and object code compatible with GNU C, providing fullest compatibility with GCC and G++ 3.x/4.x both in terms of code and of API. It is thereby also easy to integrate with existing development environments.

State Machine Compiler takes a state machine stored in an .sm file and generates the state pattern classes in nine programming languages.
Its features include default transitions, transition arguments, transition guards, push/pop transitions, and Entry/Exit actions. State Machine Compiler requires Java SE 1.4.1 or better.
Enhancements:
- This release cleans up C# and VB.net debug output using System.Diagnostics.Trace.
- It fixes a number of minor bugs.

Java iCal Group Scheduler enables several users to get together for a meeting, by using JICAL to translate their iCalendar files into their available free/busy time and post it automatically to your Web server.

This project enables Ximian Evolution desktop users to book meetings with each other (and Outlook users) via a Web server storing their Free/Busy information as specified in RFC2445.

It works with Evolution, Korganiser, Apple iCal, and MS Outlook (for meetings), and enhances your workgroup and personal calendar views. Shell scripts for converting to various image formats are also included.