Browse free open source Compilers and projects for Windows below. Use the toggles on the left to filter open source Compilers by OS, license, language, programming language, and project status.
A native Windows port of the GNU Compiler Collection (GCC)
A free C, C++ and Fortran IDE
A code generator for connecting C/C++ with other programming languages
Open Source C & C++ IDE for Windows
Dex to Java decompiler
.NET Decompiler with support for PDB generation, ReadyToRun, Metadata
A fast, portable, simple, and free C/C++ IDE
Free 32/64/16-bit multi-platform Pascal and Object Pascal compiler
Common Lisp compiler and runtime
x64 build of GCC for Windows
The Small Device C Compiler (SDCC), targeting 8-bit architectures
GCC for 32-bit and 64-bit Windows with a real installer & updater
A free COBOL compiler
A decompiler for Lua 5.x
Free compiler and development environment for Pascal
tmux is a terminal multiplexer
MSYS2 old packages
Dual-target (32 & 64-bit) MinGW-W64 compilers for 32 & 64-bit Windows
An open source Java decompiler Gui for Procyon
RetDec is a retargetable machine-code decompiler based on LLVM