最近一个将Objective C 2.0移植到Windows的尝试是Subjective项目。

自述:

Subjective is an attempt to bring Objective C 2.0 with ARC support to Windows. This project is a fork of objc4-532.2, the Objective C runtime that ships with OS X 10.8.5. The port can be cross-compiled on OS X using llvm-clang combined with the MinGW linker. There are certain limitations many of which are a matter of extra work, while others, such as exceptions and blocks, depend on more serious work in 3rd party projects. The limitations are: • 32-bit only - 64-bit is underway • Static linking only - dynamic linking is underway • No closures/blocks - until libdispatch supports them on Windows • No exceptions - until clang supports them on Windows • No old style GC - until someone cares... • Internals: no vtables, no gdb support, just plain malloc, no preoptimizations - some of these things will be available under the 64-bit build. • Currently a patched clang compiler is required; the patch adds -fobjc-runtime=subj flag

该项目可在Github上使用，在Cocotron Group上也有一个线程概述了一些进展和遇到的问题。

如果您熟悉Visual Studio环境，

小项目:使用gcc的jGRASP 大型项目:Cocotron

我听说有模拟器，但我只能找到Apple II Emulator http://virtualapple.org/。这似乎仅限于游戏。

截至2021年，GNUstep Windows MSVC工具链允许在任何Windows应用程序中集成Objective-C代码，包括使用LLVM/Clang的Visual Studio项目。这包括对自动引用计数(ARC)和Objective-C 2.0特性的支持，比如块。

该项目包括来自GNUstep的Foundation、CoreFoundation和libdispatch库。它目前不包括任何UI框架，如AppKit或UIKit，但它可以用来编写特定于windows的UI，使用Objective-C编写的跨平台业务逻辑。

最近一个将Objective C 2.0移植到Windows的尝试是Subjective项目。

自述:

Subjective is an attempt to bring Objective C 2.0 with ARC support to Windows. This project is a fork of objc4-532.2, the Objective C runtime that ships with OS X 10.8.5. The port can be cross-compiled on OS X using llvm-clang combined with the MinGW linker. There are certain limitations many of which are a matter of extra work, while others, such as exceptions and blocks, depend on more serious work in 3rd party projects. The limitations are: • 32-bit only - 64-bit is underway • Static linking only - dynamic linking is underway • No closures/blocks - until libdispatch supports them on Windows • No exceptions - until clang supports them on Windows • No old style GC - until someone cares... • Internals: no vtables, no gdb support, just plain malloc, no preoptimizations - some of these things will be available under the 64-bit build. • Currently a patched clang compiler is required; the patch adds -fobjc-runtime=subj flag

该项目可在Github上使用，在Cocotron Group上也有一个线程概述了一些进展和遇到的问题。

另外:

Cocotron是一个开源项目，旨在实现一个类似于苹果公司Cocoa文档所描述的跨平台Objective-C API。这包括AppKit, Foundation, Objective-C运行时和支持api，如CoreGraphics和CoreFoundation。

http://www.cocotron.org/

WinObjC吗?Windows Bridge for iOS(之前被称为“Project Islandwood”)。

Windows Bridge for iOS(也称为WinObjC)是微软的一个开源项目，为Visual Studio/Windows提供了一个Objective-C开发环境。此外，WinObjC提供了对iOS API兼容性的支持。虽然最终版本将在今年秋天晚些时候发布(允许桥利用即将到来的Visual Studio 2015更新中附带的新工具功能)，

这个桥现在可以在开源社区使用。从现在到秋天。iOS桥是MIT授权下的开源项目。考虑到这个项目的雄心壮志，iOS开发者可以更容易地在Windows上构建和运行应用程序。

Salmaan Ahmed在Windows Bridge for iOS http://blogs.windows.com/buildingapps/2015/08/06/windows-bridge-for-ios-lets-open-this-up/上有一篇深入的文章，讨论了编译器、运行时、IDE集成以及桥是什么和不是什么。最重要的是，iOS桥的源代码现在在GitHub上。

iOS桥支持为x86和x64处理器架构构建的Windows 8.1和Windows 10应用程序，很快我们将添加编译器优化和对ARM的支持，ARM增加了对移动的支持。