A reverse engineering suite (decompiler, editor, debugger and more)
An open-source x64/x32 debugger for windows
The slow descent into madness
A free C, C++ and Fortran IDE
Rapid applications development tool and libraries for FPC
an object-oriented language with late binding
An open-source x64/x32 debugger for windows.
frontend gdb for freebasic for windows , linux
ECLiPSe Constraint Logic Programming System
A cross platform dialog based ooRexx debugger
The world's first evidence-oriented programming language
Lua IDE/Debugger Plugin for IntelliJ IDEA
A native Windows port of the GNU Compiler Collection (GCC)
Homebrew toolchains for wii, gamecube, 3ds, ds, gba, gp32 and psp
C / C++ everything-memory debugger
An experimental BASIC language for Linux, Mac OS X, and Windows.
A free IDE for C#, VB.NET, & Boo projects on Microsoft's .NET platform
Aspect Oriented Programming (AOP) for Erlang
Basic and Easy to use CSharp IDE with compiler.
Superseded by http://www.ti.com/tool/msp430-gcc-opensource
Forward RS232 via TCP/IP