A native Windows port of the GNU Compiler Collection (GCC)
MinGW: A native Windows port of the GNU Compiler Collection (GCC), with freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All of MinGW's software will execute on the 64bit Windows platforms.
A free C, C++ and Fortran IDE
Code::Blocks is a free, open-source, cross-platform C, C++ and Fortran IDE built to meet the most demanding needs of its users. It is designed to be very extensible and fully configurable. Finally, an IDE with all the features you need, having a consistent look, feel and operation across platforms. Built around a plugin framework, Code::Blocks can be extended with plugins. Any kind of functionality can be added by installing/coding a plugin. For instance, compiling and debugging functionality is already provided by plugins! We hope you enjoy using Code::Blocks! The Code::Blocks Team
Provides native Win32 open source ports and utilities
GnuWin provides Win32-versions of GNU tools, or tools with a similar open source licence. The ports are native ports, relying only on libraries provided with any modern 32-bits MS-Windows operating system, such as 2000 / XP / Vista / 7
Rapid applications development tool and libraries for FPC
The Lazarus IDE is a stable and feature rich visual programming environment for the FreePascal Compiler. It supports the creation of self-standing graphical and console applications and runs on Linux, FreeBSD, MacOSX and Windows.
Windows installer development tool
NSIS (Nullsoft Scriptable Install System) is a professional open source system to create Windows installers. It is designed to be as small and flexible as possible and is therefore very suitable for internet distribution. Being a user's first experience with your product, a stable and reliable installer is an important component of succesful software. With NSIS you can create such installers that are capable of doing everything that is needed to setup your software. NSIS is script-based and allows you to create the logic to handle even the most complex installation tasks. Many plug-ins and scripts are already available: you can create web installers, communicate with Windows and other software components, install or update shared components and more.
NOTE: iReport/Jaspersoft Studio Support Announcement: As of version 5.5.0, Jaspersoft Studio will be the official design client for JasperReports. iReport will remain as a supported product in maintenance-only mode until December 31, 2015, meaning we will continue to fix critical defects in upcoming releases but no new features will be added to the iReport client. Continue to maintain your existing reports with the new Jaspersoft Studio! iReport is the most popular visual designer tool for JasperReports Library and JasperReports Server (Business Intelligence). Supports all the most important output formats and virtually any data source.
A distutils extension to create standalone windows programs from python scripts.
WinAVR (tm) is a suite of executable, open source software development tools for the Atmel AVR series of RISC microprocessors hosted on the Windows platform. Includes the GNU GCC compiler for C and C++.
Java class file shrinker, optimizer, obfuscator, and preverifier
ProGuard is a free Java class file shrinker, optimizer, obfuscator, and preverifier. It detects and removes unused classes, fields, methods, and attributes. It optimizes bytecode and removes unused instructions. It renames the remaining classes, fields, and methods using short meaningless names. Finally, it preverifies the processed code for Java 6 or for Java Micro Edition. ProGuard is useful for making code more compact and more efficient, on the desktop, on tablets, on smartphones, and on embedded devices. It also makes code more difficult to reverse engineer.
We extend the Eclipse IDE with tools for development in Haskell, a functional programming language, providing support for a wide range of tools (compilers, interpreters, doc tools etc.) in a coherent, convenient and configurable environment.
Free GNUWin32 utility packages
Maintaining a GnuWin32.sourceforge.net package archive: Automatic download and installation of the newest binary and documentation GnuWin32 packages.
JSmooth creates standard Windows executable files (.exe) that smartly launch java applications. It makes java deployment much smoother and user-friendly, as it is able to find and run Java VMs by itself, or help the user get one if none are available.
CLISP is a portable ANSI Common Lisp implementation and development environment by Bruno Haible. Interpreter, compiler, debugger, CLOS, MOP, FFI, Unicode, sockets, CLX. UI in English, German, French, Spanish, Dutch, Russian, and Danish.
A home for additional useful tasks and types for Ant (http://ant.apache.org).
Cross-platform Java executable wrapper for creating lightweight Windows native EXEs. Provides advanced JRE search, application startup configuration and better user experience.
Code::Blocks is an open-source cross-platform IDE (Integrated Development Environment) for C/C++. Designed with flexibility in mind, most of its features are provided by external modules (plugins) making it easily extendable and configurable.
NAnt is a Ant like build tool for .NET
Windows port of Glade 3. The latest version includes a stand-alone installer with bundled GTK+ 2.16.0 and libxml 2.7.3. Extra installers or zip files are not required. No changes to the Glade source were required to compile under mingw.
Eclipse Plug-In for deploying a project into one "fat" executable jar file containing all referenced libraries. References are taken from the project settings, so no manual configuration is necessary.
Source Navigator NG is a source code analysis tool. With it, you can edit your source code, display relationships between classes and functions and members, and display call trees. You can navigate your source code and easily get to declarations or implementations of functions, variables and macros (commonly called "symbols") which helps you discovering and mapping unknown source code for enhancement or maintenance tasks.
A collection of autoconf macros, plus an autogen.sh script that can be used with them.
cx_Freeze is a set of utilities for freezing Python scripts into executables using many of the techniques found in Thomas Heller's py2exe, Gordon McMillan's Installer and the Freeze utility that ships with Python itself
LuaEdit is an IDE/Text Editor/Debugger for the Lua language. Its interface looks like MS Visual Studio .Net� and includes syntax highlighting, code completion, advance breakpoint management, efficient search engines, etc. Client under GPL and server (core debugger) under LGPL.
CDK4AVR stands for Cross Development Kit for Atmels AVR RISC processor serie and should you support with a comprehensive Assembler and C development environment for even this processor familie under Linux or similar host systems.
HM NIS Edit is the best Editor/IDE for Nullsoft Scriptable Install System (NSIS). Its useful for experts and beginner in the creation of Setup programs with the NSIS.