Developer Tools/Compilers
freeware
Java SE Runtime Environment (JRE)
Java Platform, Standard Edition (also known as Java 2 Platform) lets you develop and deploy Java applications on desktops and servers, as well as today's demanding Embedded and Real-Time environments. Java SE includes classes that support the development of Java Web Services and provides the foundation for Java Platform, Enterprise Edition (Java EE).
freeware
Python Interpreter/Compiler
Python is an interpreted, interactive, object-oriented programming language often compared to Tcl, Perl, Scheme or Java. It features modules, classes, exceptions, very high level dynamic data types, and dynamic typing. There are interfaces to many system calls and libraries, as well as to various windowing systems (X11, Motif, Tk, Mac, MFC). New built-in modules are easily written in C or C++. Python is also usable as an extension language for applications that need a programmable interface. The Python...
freeware
LoseThos
LoseThos is a 64-bit supplemental (like insurance) operating system for a niche -- programming as entertainment. It is not a Windows wannabe. The envisioned usage model is like that of a classic Apple II or Commodore 64. It has no security and allows full access to memory, I/O ports and all assembly instructions from your programs. Now, the average programmer has rights normally restricted to system programmers. What's more entertaining as a programmer than tinkering with kernal ideas or playing around...